I watched this film last night on Sky and I'll admit that it wasn't what I was expecting, but I didn't think it was terrible. I thought that it was very well directed and the silence in it was just chilling! It was never meant to be a Supernatural film - it's just meant to make the viewer question the boy.
The ending was strange, but I thought Nicole showed the fact that she would never be able to let go of her dead husband very well and portrayed the fact that all she wanted was her dead husband, no matter what form he was in (ie.incarnation), beautifully.
As for this whole thing about them being in the bath togther - I feel people are taking this way too far - nothing ever happens between her and the kid - she says they're going to have to wait until he's 21!! People read to much into these things nowadays. That whole scene is meant to show how all she wants is her dead husband.