Question: Who wrote and performed as a duo with her sister Anna McGarrigle, and wrote "Proserpina", the album's first single?

Context articles: Kate McGarrigle
Heart Like a Wheel/Old Town
Tell My Sister
Come Home to Mama
Kate &amp; Anna McGarrigle
Complainte pour Ste. Catherine
The McGarrigle Christmas Hour
Heartbeats Accelerating
Anna McGarrigle
Philippe Tatartcheff

Kate McGarrigle, CM (February 6, 1946 – January 18, 2010) was a Canadian folk music singer-songwriter, who wrote and performed as a duo with her sister Anna McGarrigle.
"Heart Like A Wheel"/"Old Town" was a double A-sided single from The Corrs' fifth studio album, "Home", released in late 2005.
 "Heart Like a Wheel" is a cover of the Kate & Anna McGarrigle song, and "Old Town" is a cover version of the Phil Lynott song.
 It is their lowest charting UK single to date (excluding non-charting singles), although in Spain "Old Town" reached the top 10, peaking at No. 8.
 "Heart Like a Wheel" entered the British single charts at No. 68.
Tell My Sister is a three-disc compilation album released by Nonesuch Records as a box set on May 3, 2011 in the United States, and on May 9, 2011 in the UK.
 The first two discs contain Kate and Anna McGarrigle's first two albums, "Kate & Anna McGarrigle" and "Dancer with Bruised Knees".
 The third disc comprises demos, including acoustic versions and other previously unreleased tracks.
Come Home to Mama is the third studio album by singer-songwriter Martha Wainwright, released on October 15, 2012.
 The album was recorded at Sean Lennon's home studio in New York City and produced by Yuka Honda.
 Guest musicians include Honda, Lennon, Wilco guitarist Nels Cline and Dirty Three drummer Jim White.
 "Proserpina", the album's first single, was written by Wainwright's deceased mother, Kate McGarrigle.
Kate McGarrigle (February 6, 1946 – January 18, 2010) and Anna McGarrigle (born December 4, 1944) were a duo of Canadian singer-songwriters from Quebec, who performed until Kate McGarrigle's death on January 18, 2010.
Complainte pour Ste. Catherine is a song written by Canadians Philippe Tatartcheff & Anna McGarrigle, first featured on Kate & Anna McGarrigle's eponymous debut album, "Kate & Anna McGarrigle", released in 1976.
The McGarrigle Christmas Hour is the tenth album by Kate & Anna McGarrigle, released in 2005.
 A sequel to their 1998 album "The McGarrigle Hour", the album features a program of Christmas music recorded by the McGarrigles, their family and a number of friends and collaborators.
 It was also the last album to be released by the duo before Kate's death in 2010.
Heartbeats Accelerating is the sixth album by Kate & Anna McGarrigle, released in 1990.
 It was their first album in eight years, after "Love Over and Over" in 1982, and received favourable reviews from many music critics.
Anna McGarrigle, CM (born December 4, 1944) is a Canadian folk music singer and songwriter who wrote and performed as a duo with her sister, Kate McGarrigle, until Kate's death in 2010.
Philippe Tatartcheff (born in Geneva, Switzerland) is a Canadian poet and songwriter.
 He is best known as the lyricist who wrote French language songs recorded by folk duo Kate & Anna McGarrigle.