Question: Which famous person is the sister of the singer who released "Piece of My Heart" and "Gotta Find Me a Lover"?

Context articles: We've Gotta Find a Way Back to Love
Searchin' (I Gotta Find a Man)
Heart First
Dragon Ball: Original USA TV Soundtrack Recording
Gotta Find Me a Lover (24 Hours a Day)
I Got to Find My Baby
Botticelli (game)
Erma Franklin
Erotomania
Hazell Dean

"We've Gotta Find a Way Back to Love" is a song by Freda Payne from her 1973 album "Reaching Out", written by the songwriting team of Holland–Dozier–Holland.
 It was later covered by Bonnie Pink and released as her third single on the Pure Sand label on June 28, 1996.
"Searchin' (I Gotta Find a Man)" is a hi-NRG song written by Ian Anthony Stephens, originally recorded and made famous by British singer Hazell Dean.
 Originally released in 1983, it became a Top-Ten hit on the UK Singles Chart and U.S. Dance/Disco charts.
 It was covered by Australian girl group Young Divas in 2007.
Heart First is a 1984 album by British singer Hazell Dean.
 It was her first album as a mainstream pop artist following the top ten successes of "Searchin' (I Gotta Find a Man)" and "Whatever I Do (Wherever I Go)".
 It was the first album to be produced by the highly successful Stock Aitken Waterman production team.
Dragon Ball: Original USA TV Soundtrack Recording is the official US soundtrack from the anime "Dragon Ball", released in 1995.
 The score was written and composed by then series composer Peter Berring.
 It includes the theme song known by fans as "Gotta Find That Dragon Ball!"
 which was written by Brian Griffith.
 It is the only US soundtrack of the show to be produced for the consumer.
"Gotta Find Me a Lover (24 Hours a Day)" is a song that became a hit on Billboard's R&B chart in 1969, reaching #40, for Erma Franklin.
 It was written by Carl Davis and Eugene Record.
 The song was Franklin's last R&B hit.
 It was Brunswick # 55403.
"Gotta Find My Baby" was composed by blues singer Peter Clayton, who recorded it under the name "Doctor Clayton' in Chicago on 11 November 1941 for Bluebird Records (released as Bluebird B8901).
 Some of Clayton's recordings were reissued on the album "Pearl Harbor Blues" (RCA International LP1176) in 1970, but "Gotta Find My Baby" was excluded; it is currently available on "Doctor Clayton - His Complete Recorded Works" (Document CD DOCD 5179).
 The song was later recorded by other Rhythm & Blues artists in the 1950s as "I Got To Find My Baby", including Little Walter and Chuck Berry, who is often credited with the song as his own.
Botticelli is a guessing game which requires the players to have a good knowledge of biographical details of famous people.
 The game has several variants, but the common theme is that one person or team thinks of a famous person, reveals their initial letter, and then answers yes/no questions to allow other players to guess the identity.
Erma Vernice Franklin (March 13, 1938 – September 7, 2002) was an American gospel and R&B singer.
 Franklin was the elder sister of American singer/musician Aretha Franklin.
 Franklin's best known recording was the original version of "Piece of My Heart", written and produced by Bert Berns, and recorded in 1967, for which she was nominated for a Grammy Award.
 A cover version of the same song was recorded the following year by Big Brother and the Holding Company, with the lead vocal by Janis Joplin.
Erotomania is a type of delusional disorder where the affected person believes that another person is in love with him or her.
 This belief is usually applied to someone with higher status or a famous person, but can also be applied to a complete stranger.
 Erotomanic delusions often occur in patients with schizophrenia and other psychotic disorders, but can also occur during a manic episode in the context of bipolar I disorder.
 During an erotomanic delusion, the patient believes that a secret admirer is declaring his or her affection for the patient, often by special glances, signals, telepathy, or messages through the media.
 Usually the patient then returns the perceived affection by means of letters, phone calls, gifts, and visits to the unwitting recipient.
 Even though these advances are unexpected and often unwanted, any denial of affection by the object of this delusional love is dismissed by the patient as a ploy to conceal the forbidden love from the rest of the world.
Hazell Dean (born Hazel Dean Poole, 27 October 1952) is an English dance-pop singer, who achieved her biggest success in the 1980s as a leading Hi-NRG artist.
 She is best known for the top ten hits in the United Kingdom "Searchin' (I Gotta Find a Man)", "Whatever I Do (Wherever I Go)" and "Who's Leaving Who".
 She has also worked as a songwriter and producer.