What should i do?

i used to be best friends with this girl for years and year when we were little. last year, i finally got tired of all the things she’s put me through and realized i didn’t deserve to be that unhappy. i still hold a grudge against her a little but she constantly tries to get closer to me. i think she misses me, and i wouldn’t mind just being ok friends with her, but i don’t want to get too close and have her screw me over like she’s done so many times before. she always used me to have someone over to my house, she treated me horrible, blamed me for every fight, never wanted to spend time with me, talked about me behind my back when we were supposedly best friends, etc. what should i do?