Start talking to her after class and walk her to her next class. You don’t have to “make her like you,” she probably already likes you and if she doesn’t, nothing you do is going to change that.
Look, you’re in school and meeting and getting to know new people will never be easier. If you could understand just how much harder all this is after you get out and have a job and everything to contend with, you would never complain about this.
Beautiful, young people everywhere, that all share your interests, all you have to do is talk to them. Fricken’ paradise. Yet kids will always find ways to be depressed and lonely. It’s a crying shame.