Haha friends like that really just throw me off because it's literally just a number on a piece of paper that doesn't matter in the long run. Some people are just so competitive that it takes over their friendships :/ I had a friend that was always trying to one-up me at school and I just really didn't care as long as I was sliding by because I had much more interesting things to do haha. But she ended up backstabbing me in the middle of a presentation and what? Just for an A? I got a D and had to talk to the teacher about making up the speech (which she let me because she knew me fairly well as the type to never willingly make a fool of myself in front of the entire class). It was a terrible experience but it goes to show you where their loyalties lie. Of course, not all people are like that (I just had a particularly nasty experience) and so you just have to make yourself aware of it and decide either to confront her or just roll your eyes.

Best of luck!