Alicia

Alicia was the mother of Audrey Raines. She died when Audrey was nine years old.

[edit] Background information and notes

It is unknown whether Alicia was married to Audrey's father, Secretary of Defense James Heller. While Day 4 7:00pm-8:00pm named Heller's deceased wife as "Susan," and many fans assumed that she was the mother of both Audrey and Richard Heller, dialogue in Day 6 1:00am-2:00am clearly stated that Audrey's mother was named Alicia. Some possibilities are that Heller was married to both Susan and Alicia, both of whom died, or that either "Alicia" or "Susan" was his wife's middle name. It may also have been a mistake on the part of the writers of 24.
While Alicia was definitely Audrey's mother, it is unclear if she was also the mother of James Heller's son, Richard.