She went to Upper Darby High School where she was involved with the student newspaper, the drama club, and the tennis team.
She wrote the screenplay for the 2004 comedy Mean Girls, which starred Lindsay Lohan and was based off the novel Queen Bees and Wannabes by Rosalind Wiseman.
She married Jeff Richmond in 2001. The couple welcomed their first daughter, Alice, in 2005 and their second daughter, Penelope, in 2011.
After her time on Saturday Night Live, she returned to the show as a frequent guest-star in 2008, impersonating Republican vice President candidate Sarah Palin. The impersonation earned her an Entertainer of the Year award from the Associated Press.