One of the people who fatally overdosed on fentanyl sold by a crew of dealers busted in Washington Square Park Thursday was a Colorado teenager who had come to the Big Apple last year to start an internship with a non-profit and help on a Broadway theater production, according to sources and her family. Bailey Shaw, 18, was one of the two people who died in just a six-month stretch last year after buying drugs from the crew, which calls itself WSP Enterprise, sources told The Post.