Question: When was the mother of Melitta Schmideberg died?

Context articles: Phoenix Rising (novel)
Jørgen Friis
Mother's Day (Rugrats)
Inez Storer
Melanie Klein
Melitta Schmideberg
Mother and Children
Yo Hitoto
Portrait of the Artist's Mother at the Age of 63
List of The Saddle Club characters

Phoenix Rising is a 1994 book by Karen Hesse.
 It is a realistic fiction book about a 13-year-old girl named Nyle and her grandmother, and how their lives are disrupted by a nuclear accident.
 Everyone that lives anywhere near the accident suddenly has to wear masks, test everywhere for high levels of radiation, and watch everything they eat and drink to make sure it's not contaminated until the government gives the all clear.
 Nyle and her grandmother live together on a farm in Vermont, near the nuclear plant in Cookshire.
 She and her grandmother take in two evacuees from the accident.
 The boy, 15-year-old Ezra Trent, absorbed a large amount of radiation and is very sick, yet there is no room in any of the hospitals for him.
 His father had died less than a week ago at the time Nyle and her grandmother take them in, due to radiation poisoning.
 Nyle is terrified to let herself care about him because she believes that if she lets herself care for him, she will end up losing him, just like her mother and grandfather.
 He and his mother, Miriam Trent, end up staying in the back bedroom, which Nyle calls 'the dying room' because that is where her mother and grandfather had died when they were sick.
 She pushes Ezra away, but they eventually end up growing closer as he gets better.
Jørgen Friis was a Danish lord and Governor-general of Norway.
 He was probably born in Nes Castle, Denmark and died in 1616 in Skørping.
 His father Ivar Friis (died 1557) was the lord at Nes, and his mother was Sophie Andersdatter Glob (died after 1574).
 He was married three times, first on 2 August 1573 with Anne Pallesdatter Juel (died 19 December 1576), daughter of Palle Juel til Pallesbjerg (died 1585), the judge in Nordjylland and Anne Lykke (died 1585).
 His second marriage was to Else Bjørnsdatter (27 March 1558 – 9 October 1594), daughter of national counselor Bjørn Andersen of Bjørnsholm (1532–1583) and Sidsel Truidsdatter Ulfstand (died 1561).
 His third marriage was to Lisbeth Christoffersdatter Galle (died 1616), daughter of the lord of Steinvikholm, Christoffer Galle (died 1555) and Birte Clausdatter Bille (1534–1613).
 She served as Acting County Sheriff of the County of Vinstrupgård, Denmark, taking charge of the tenantry after the death of her first husband, Eggert Ulfeldt.
 She and Jørgen Friis were buried on the same day in 1616.
"Mother's Day", also known as the "Rugrats Mother's Day Special" or "Rugrats Mother's Day", is the second episode of the fourth season of the American animated television series "Rugrats" and the show's 67th episode overall.
 Released as a Mother's Day special, it revolves around the holiday from the perspective of a group of babies—Tommy Pickles, Chuckie Finster, and Phil and Lil Deville.
 Tommy, Phil, and Lil attempt to find the perfect mother for Chuckie (who is raised only by his father Chaz) while sharing their favorite memories about their moms.
 At the end of the episode, Chuckie's mother is revealed to have died of a terminal illness.
 It concludes with Chuckie and Chaz looking through a box of her belongings, including a poem she had written for her son.
 Meanwhile, Didi Pickles tries to plan the perfect Mother's Day with her mom Minka, while Betty DeVille helps Stu Pickles with his invention to help mothers.
Storer was born in Santa Monica, California, in 11 October 1933.
 She was raised Catholic but her mother was Jewish.
 When her mother was on her deathbed, Storer found out that her mother had left Germany to escape from the Nazis.
 Storer had believed that there was more to her family's past than she had been told and had suspected that she had Jewish ancestry since the age of thirteen.
 Storer's mother said that all of her relatives had died, but after her mother's death, Storer located more than two dozen cousins, some living in California.
 As a child, she spent time on Hollywood movie sets with her father who worked as an art director.
Melanie Reizes Klein (30 March 1882 – 22 September 1960) was an Austrian-British psychoanalyst who devised novel therapeutic techniques for children that influenced child psychology and contemporary psychoanalysis.
 She was a leading innovator in object relations theory.
Melitta Schmideberg (1904-1983) was a psychoanalyst and author who was the only daughter of Melanie Klein.
Mother and Children (also known as La Promenade) is an Impressionist painting by Pierre-Auguste Renoir that is housed in the Frick Collection.
 Although the painting is most commonly known as "Mother and Children", Renoir presented it with the title "La Promenade" in 1876.
 The painting is displayed in an alcove under a set of stairs at the Frick.
 Jill Bialosky wrote in her memoir "History of a Suicide: My Sister's Unfinished Life" that, when she and her mother visited the Frick, "Mother and Children" reminded her of what life was like with her mother and sister Kim before Kim died.
Yo Hitoto (一青 窈 , Hitoto Yō , born September 20, 1976) is a Japanese pop singer.
 Her mother is Japanese and her father is Taiwanese.
 She can speak three languages: Japanese, English, and Mandarin.
 Tae Hitoto is her older sister.
 Her name Hitoto is not her real surname, it is her mother's maiden name.
 She changed her name when she came to Japan.
 Her father died when she was very young, and her mother died when she was 16.
Portrait of the Artist's Mother at the Age of 63 (German: Bildnis der Mutter mit 63 Jahren) is a charcoal drawing from March 1514 by the German printmaker and painter Albrecht Dürer, now in the Kupferstichkabinett, Berlin.
 It is a tender but unflinching study of his mother, Barbara Holper (c. 1451–1514), completed while she was gravely ill, two months before she died.
 Dürer was close to his mother and after her death wrote that she had "died hard" and that "I felt so grieved for her that I cannot express it".
 In its bleakness of mood, the drawing has been compared to his two great 1514 engravings, "Melencolia I" and "Madonna by the Wall".
 This work is her second portrait; the c. 1490 oil on oak panel painting now in Nuremberg is today generally accepted to be either an original or a copy of a lost original.
 It was bought in c. 1877 by the Kupferstichkabinett from the Firmin-Didot auction house in Paris during a period of acquisition of over 35 Dürer drawings by the gallery.
Carole is a bright African American girl with a natural riding ability.
 She became devastated when her mother died of cancer, and when Cobalt died, she almost gave up riding.
 But her father, U.S. Marine Colonel Mitch Hanson, reminded Carole that her mother would have wanted her to follow her passion.
 With money left by her mother, she bought a buckskin gelding, Starlight.
 Carole knows her future lies with horses, but there are many paths to follow and she does not know which road to take.
 Her grades are high enough for her to become a veterinarian but she would also love to breed and train Thoroughbreds.
 She would not mind being a professional steeplechase jockey, or maybe traveling the world teaching dressage clinics.
 Whatever career she chooses, her most immediate goal is to be the very best rider she can be.
 Carole has little time for boys; therefore, she has never understood why anyone would prefer the company of a boy to that of a horse.
 This is when the pressures of family, friends, school and competition cannot touch her.
 Anyone who catches a glimpse of horse and rider moving as one along the lush creek cannot help but be in awe.
 Like the other Saddle Club girls, Carole is becoming a young woman.
 In "Moving On, Part 1", Carole's dad got re-deployed and she almost left Pine Hollow, The Saddle Club, and Starlight behind forever when it was decided that she'd live with her Aunt Penny.
 Thanks to Mrs. Reg, however, Carole becomes the first live in boarder at Pine Hollow Stables as of "Moving On, Part 2" which allowed her to stay at Pine Hollow, continue to be in The Saddle Club, and keep Starlight.
 Carole has never forgiven Veronica for killing Cobalt.
 In "Itchy", Carole thought that she was allergic to horses, but after a visit to the doctor it was revealed that she is allergic to camels as the saddle blanket that her father sent her is made out of camel hair.
 When Carole suggests naming Samson after "Samson and Delilah", it was a hinted indication that Carole is a Christian.
 Whenever Carole's sad, to cheer herself up she'll ride Starlight or play her guitar.
 Carole is focused, determined, stubborn, and passionate just like her mother was.
 In the books, Carole and Lisa go to Willow Creek Junior High School together and Carole and Stevie are the same age.
 in the "Pine Hollow" series Carole goes to Willow Creek High School with Lisa.
 Carole's favorite color is Purple.