Sarah didn't think that she would go to Hogsmede for this weekend, with her spending money being depleted, yet she wanted to send her report to the headmistress. She could have handed it in, yet the wait would be too long, and she knew that the headmistress would not take it so well.. Better to send it by owl. Better yet to send it by a Post office owl as that way there would be no way the headmistress could claim that she did not recieve it (as if Sarah did not trust Angelina). So if spending a bit of money for this owl post would mean the end to the turnstiles and the Arithmancy professor messing with her education, then Sarah would do that. It was good to make Sacrifices.

She walked into the store, her letter containing the report in her hand. "Hello. I would like to send a letter to the headmistress of Hogwarts... the cheapest way". She knew that that would not be so speedy, yet she wanted to visit the library that week.