Who is the girl complaining about?

I hope I never grow old! My grandfather lives with us and he is making my life a misery. When I was small he was kind and cheerful. But now he is always complaining and criticizing. I mustn’t interrupt when he is talking. It’s rude. He doesn’t like my clothes. "Nice girls don’t like that." I shouldn’t wear make-up. "Natural beauty is the best." Sometimes he interferes with my homework. "When I was young, we used to do maths differently," he says. Honestly, he is so old that he doesn’t know anything. But that doesn’t stop him criticizing me.
He doesn’t like my friends and my favorite CDs. "You are making too much noise," he says. "I Can’t get to sleep." When he is not complaining he is asking questions. "Where are you going? Where have you been? Why aren’t you helping your mother?" He thinks I am six, not sixteen. Anyway, why can’t I do what I like? It’s my life, not his.