Story idea

My story so far is about a teenage girl that's an art student at a prestigious arts school in New York City. When she's not painting pictures, she is stealing from many clothing stores around the city. I'm talking big name designers in the city. The type of stores where it is hard to find anything under $100. There is one jacket(or theft situation) that she steals that makes her have a sudden realization that she has a problem with shoplifting. I don't know how I'm going to make this realization real huge, but I do have some ideas I just want it to be a surprise.