I think this child is very, very ill. I feel bad for him - he didn't ask for whatever is wrong with him. I hope his father had him in intense therapy. I'm surprised he was going to public school. I'm surprised when this happened that his father didn't immediately put him in a psychiatric hospital.
I think it's very likely that IF suffered some severe traumas when he was younger, probably severe abuse of some kind - not necessarily abuse by a parent, but some kind of traumatic abuse.
I think he is still young enough that he may be able to be helped, with very intense psychiatric treatment.
I am heartbroken that Leila suffered what she did as a result of whatever was going on with IF. She should have been better protected from IF. IF should have been better protected from himself, and the turmoil inside him.
In the aftermath, IF needs intense psychiatric care. I hope he gets it. I hope the judge grants it. I hope it helps. Otherwise, God help those IF comes in contact with when he gets out.
All my opinion.