Who is Caitlin Dillon from Black Friday and what is their importance?

Director of Enforcement for the SEC's Division of Trading and Exchange, Caitlin became interested in finances when her father was pushed into bankruptcy. She then wanted to make the financial institution better and admits that she moved to New York as an "avenging angel." She also admits that she's proud of her six-figure income but sometimes wants to throw it all away and have a baby. When she meets Carroll, she's attracted and sometimes finds herself daydreaming about him. She doesn't seem anxious to rush into a relationship but it's Caitlin who shows up at Carroll's apartment on the morning they make love. Caitlin becomes embroiled in the Green Band investigation because of her extensive knowledge regarding the financial district.