Started The Unbecoming of Mara Dyer a couple days ago, and I'm just kind of pulling my hair out and asking myself, why why why? I'm 2/3 of the way through, and I honestly don't know where the plot is in this book. I like the LI at first, but now even he's getting kind of boring. I'm told that something really weird happens soon so I'm just kind of holding out until then to see how WTF it can get.
Keep with it! It definitely picks up towards the middle and through to the end. I think the main plot hook is the suspense of wondering whether she really is crazy or if something else is going on. If that doesn't draw you in, though, you may be disappointed...