My problem with Colleen (spoilers)
Overall, I liked this movie, but my biggest problem was with the titular maid Colleen. At the beginning, she appeared to be a fairly sympathetic character, but toward the end, she transformed into an unlikable psycho. The movie appears to be trying to make Colleen sympathetic, but her actions make it impossible to feel sorry for her considering Laura played no role in her son's suicide.
For me, the last straw came in when she attacked Matthew, who much like Laura, was nothing but nice to her son. It just cemented the fact that she was nothing but a delusional nutcase.