On kindle I read Who Is Sarah Lawson by KJ Rabane and that was very good. A woman goes home and finds a strange family living in her house, claiming it is theirs and that she is not who she believes herself to be.
Have you read any Nicci French books? The current ones all seem to be the Frieda Klein series (all with a day of the week in the title, Blue Monday etc, currently on Thursday) but some of her earlier stand alone ones are quite good as well.
They usually involve a woman who is the victim of or linked to a crime or an odd event, trying to work out what's happening, often with nobody believing her or helping her, including the police.
I recently read Precious Things by Collette McBeth and that was quite good.
Copycat by Gillian White was alright, about two women who live next door to each other and one is obsessed and possessive about the other.
I read a couple of kindle books by a MNer as well that I enjoyed. My Time, Your Time and The Lonely Cool Before Dawn, both by Mary Torjussen.