Who is Lilly from Chasing the Dime: A Novel and what is their importance?

Lilly is twenty-three years of age with shoulder-length brunette hair and brown eyes. She has a deep tan and full lips, does not smoke and can easily be described as beautiful. She is about five feet tall and weighs just over one hundred pounds. She is part-Spanish and part-American, and often works with a girl named Robin. Her home is listed as an apartment in Santa Monica and she drives a Lexus that she took great pride in.