Permission

i think the father is traumatized by the lose of his son that he clings onto his two kids to "protect" them. He follows them to school, walks hand in hand in hand with them and he jumps into the pool where his kids are playing and than when they swim away hes there "talking with his dead on and wife" whom i think died as well. And they advise him to move somewhere that he could afford. The headmistress to me is kind of confusing because she could either be a care giver or maybe a girl he is seeing?