Clingy friend

Brooke

So I’ve had this “friend” since I was 3 years old. I’ve never really liked her but I’m from a school with only having 2 guys, and 3 girls in my grade so I feel like I have to hang out with her. Our moms are also friends so it’s not like I can avoid her. It sounds rude but she has done so much to me over the years and I’m tired of all her lies, and bullshit and she always follows me everywhere when we are at school. I just want her to leave me alone, she always has to do whatever I’m doing. I don’t know what to do. I don’t want to be rude but I don’t want to be friends with her anymore. How can I get her to realize that?