AITJ for not sharing my notes with a classmate who ignored me all semester?

I’m the type of person who takes really detailed notes in class. I don’t do it to show off or anything, it’s just how I study. A few classmates have asked me for my notes before and I usually don’t mind sharing, especially if they missed class for a legit reason.

There’s this one classmate though who barely shows up and never really talks to anyone unless they need something. Earlier in the semester, I actually tried to talk to her a few times when we were seated near each other but she mostly ignored me or gave one-word answers, so eventually I stopped trying.

Now it’s close to finals week and suddenly she's messaging me asking if I can send her ALL my notes from the entire semester because they missed a lot of lectures. She said she's really stressed and heard that my notes are the best in the class.

I told her I wasn’t comfortable sending everything because it’s a lot of work that I put time into and it felt weird that the only time she reached out to me was when she needed something. I suggested she ask the professor for the lecture slides or check with other classmates.

She immediately got annoyed and said I’m being selfish and that it’s not a big deal to just send a PDF. Now a couple of people in our class think I’m being petty because sharing notes doesn’t cost me anything. But to me it feels like I’m being treated like a free resource instead of a person.

AITAH for refusing to send my notes?