Decent writing, interesting story.
I thought going straight into peeing might not be a great narrative choice, but it depends on the reader. The stuff about gender is either fantastic or terrible (is it exploring ideas of gender, gender vs identity, etc..... or is it ignoring the complexities to have a male character who must therefore innately hate dolls etc?) The final choice was very interesting.
One of the stat boxes blocked my view of the text, which drove me bonkers. It only has that flaw in Internet Explorer.
The end was bittersweet, which was the right choice even though it's unusual for a children's story.