I enjoyed the story - it's about self-discovery and how we limit and define ourselves based on our family - but it's pretty much contemporary chick-lit for the literate.
Also of note: the story is told from a very unusual point of view. The omniscient narrator speaks singularly as all three sisters collectively (first-person plural). Everything is "we" even when talking about one sister's secrets that she's keeping from the others. It's workable, but a little awkward sometimes.