American Mistress (2015)

Greta Gerwig is having a great year, and well deserved. She has been taking giant steps toward stardom from the very respectable platform of independent film making and I have really enjoyed both her writing and the characters she has played.  This film is no exception.
Here she plays Brooke, an almost-thirtysomething New Yorker who talks and talks without every actually seeming to listen, much less connect, with anyone else, and who wants to be influential and famous and successful but doesn't seem to have any sort of realistic plan for achieving that, or any particular talents to bring to bear on her goal.  She is an ideas woman who has little in the way of follow through, but the charisma to bring people into her orbit.  Tracy is about to be her step sister and she is the perfect side kick for Brooke, initially believing her capable of anything, and when that star loses its luster, she goes about finding an escape hatch for her.  It is an enjoyable ride from start to finish.