I've known Claire to loose her temper only twice in all her 18 years of life. Loose it that she was shaking and used that super woman strength. But to be honest her buttons had been pushed too far.
That kid was probably watching the wrong sort of tv shows, and he became immune to the violence and horror he was watching. I'd like to know where the parents were, and what was an 18 year old doing playing with ten year olds anyway, siblings I can understand but not other kids.
saying he is aspergic, and using it as maybe reason, is just blindness to other factors.