Friend help!? What should I do?

Okay so I am going to be a sophomore next year and competitive cheerleading is a big part if my life. I love it so much and drive almost an hour several times a week ti get there. I have been on 3 different teams and the one that I am now is the best one. All three years j have been cheering I have been in a team with this girl, let's call her mary. I have become quite good friends with her but I find that too much of her is bad and she annoys me so much sometimes but other times I really like her. At cheerleading she always talks to me and it is hard for me to make closefriends on the team and hangout with then when she is on my team. This year I joined a month before her and last year I joined the team about 2 months before her. I am friendly with everyone on my team now about 30 girls but she just joined my team and i feel weird about it. Her dad is kind of a jerk sometimes she is smothers me at practice. Btw she goes to my school and in my friend group. I thought I wanted her to join but now I just feel weird about it. The thing is that I am a very competitive person and will do what it takes so that I am one if the best. I am aggressive when I want a new skill and work hard until I get it but she isn't like that at all and it really bothers me because she has no tumbling skills at all! Anyways just thought I would share some frustrations and ask for some advice or thoughts on the situation