Kerrigan is a graduate of Barnard College. Her plays include Transit and Imaginary Love, which was a 2006 Princess Grace Award Finalist.
With collaborator Brian Lowdermilk, she wrote an adaptation of Henry & Mudge, which had an Off-Broadway run at the Lucille Lortel Theatre and is currently touring the country with TheatreworksUSA. Their latest original musical The Unauthorized Autobiography of Samantha Brown was most recently developed at a workshop at Manhattan Theatre Club directed by Christopher Ashley. This musical also received a reading at the Artistsí Showcase Reading Series at the 92nd Street Y, and was featured in the 2005 NAMT Songwriters Showcase.
They have collaborated on two other musicals: The Woman Upstairs and Wrong Number, both of which were featured in the New York Musical Theatre Festival. They are recipients of a 2006 Jonathan Larson Award and a 2004-2005 Jonathan Larson Fellowship at the Dramatists Guild, and they are members of the BMI Musical Theatre Advanced workshop, ASCAP and the Dramatists Guild.