The changes from 1st person to third person were maddening and one has to slog through it just to find out that it adds nothing to the story but confusion. I have to confess that it was so poorly done, initially I though it was in error. Upon further evaluation of the material I think the author was attempting (ineffectively I might add) help the reader experience her protagonist's multiple personality disorder.
This book attemtps, unsuccessfully in my opinion, to deal with some very meaningfull issues. Unfortunately, the character development is so poor that it hardly seems to matter what happens to them.
This book comes off as a whining justification for the protagonist's deficiencies as a wife and mother. The truely sad part is that it has become so common a theme in our popular culture that now people accept these rationalizations as the whole truth. If you're a screw-up it must be due to the horrors suffered during childhood, because without that rationale we would have to take some responsibility ourselves for doing things that are unthinkable.
This is a very difficult subject to do well and it certainly wasn't done well here. I came out of the book feeling little more than contempt for the protagonist, when I should have felt empathy. Don't waste time on this one.