An interesting premise, but a very boring book. There's so much psycho-babble in it, it doesn't matter what actually happened, all that matters is how people feel about what they believe happened. There's so much personal insight from all of the characters that there's no actual story. The characters are either awful- like her sisters and mother- or so vague, like Mary and "the Man" that none are believable.
It just wasn't interesting, and was way too self-absorbed.