Keep was nominated by President
Jimmy Carter on May 9, 1980, to the
United States District Court for the Southern District of California, to a new seat authorized by 92 Stat. 1629. She was confirmed by the
United States Senate on June 26, 1980, and received her commission on June 30, 1980. She served as Chief Judge from 1991 to 1998. Her service terminated on September 14, 2004, due to her death in San Diego. As a member of the
Judicial Conference of the United States (JCUS), Judge Keep represented the Ninth Circuit District Judges at the JCUS from 1999 to 2002. She also was appointed by Chief Justice
William Rehnquist to the Defender Services Committee of the JCUS in 1998 and served through 2004. Her court handled many drug and immigrant smuggling cases. Keep made a significant contribution to court governance as a member of the Judicial Council of the Ninth Circuit for eight years. She first represented the chief district judges from 1994 to 1997. Her service to the council continued as president of the District Judges Association from 1997 to 1999, and then as the district judges’ representative to the JCUS from 1999 to 2002. Other service to the Ninth Circuit included chairing the Task Force on Judicial Wellness, which paved the way for groundbreaking efforts to promote health and wellness among judges, and the Federal Court Study Committee. ==Death and legacy==