Warning spoilers. Overall I liked the story, but there were aspects that I did not care for as well. I liked the big twist ending, I did not seeing it coming. I think the manner in which it was written kept the reader in the dark about Theo's true nature. Although I liked the twist I did not really understand it. If Theo did all that he did, why would he want Alicia to talk again. Even if he felt guilty she could still accuse him of crimes, though I suppose for the most part the statute of limitations would have past by the time that he became her therapist.
I also was not a fan of the diary entries on Alicia's part. It did not make sense the way it was written. I do wish there had been more to them though, entries about the time that she spent in the facility would have given more of an arc to the story.
At the end of the day it was a good story and a quick read for me, even if it didn't all add up.