In what way do you feel it didn't turn out exactly how you would like ? I would agree this is an achievement. You have managed to get the atmosphere of desperation across very well. I found it hard going to watch for so long before there was any dialogue. AND I couldn't make out what the kid said. Not because it was badly recorded, I just didn't understand it.
Although I realise there are some subtle parts in the movie like the bed wetting. I still feel as though it is laking something of the human element in the relationship between the boy and the woman. At first he wanted to get revenge but the film doesn't show us why he didn't go through with it. Which to me is the whole point of the movie or have I read it wrong.
It's very well produced. You obviously had a good crew around you.