He was too pissed off to write back in a timely manner and let her letter sit at the bottom of his book bag for weeks. After about fifteen versions of his reply, he stopped caring about being neat with it and just sent this violently crossed out version.

March 1st, 1890

Mother,

Pretend no time has passed? Are you daft?

I'm in my fifth year. In case you don't realize how long it really has been. I'm studying to be an animagus. I'm not sure father approves of that decision, but it's mine to make.

What have you been occupying your time with? since it's obviously not been your family.

Thomas