After I told her friends I liked her, she's acting kind of rude to me?

There's a girl I like. One day, her friends ask me if I like her, I told them I did. For the next days, she would talk to me kind of rudely, or she would heavily ignore barely paying me attention. I don't know how I should adress this. First of all, I'm almost certain her friends told her despite having told me they won't, however they might not have. She was paying me more attention before I told her friends that I liked her. If she doesn't like me back, I can respect that, and we can just be friends, however I don't know how to adress it. She has been indirect in the way she acts to me, however I feel somewhat avoided, so if adressed I don't know if she may deny everything. What should I do?