How do you deal with obnoxious people?

There’s this girl I’m in school with and we’ve never really been “friendly” but I’ve always been nice. She would constantly ask me questions for everything & I would help her each time the best I could. She would also constantly ask me if I’m “studying” or what my mark was. Just recently we started a new term and I asked her a simple question about a quiz and she had such ignorant answers! As if she was annoyed. She basically told me to pay attention to what the lecturer was saying then maybe I’d understand what to do 🤷🏻‍♀️ yet I help her with the simplest things that she should’ve known. 🤔 I noticed in our recent lab she made a face because I was asking questions 😑

Maybe I’m overthinking it buuut, it made me feel like crap. I’m too nice for my own good 😶

Just ignore it?