Toxic Friend?

I think my friend might be toxic. She meddles in my relationships. She would talk to guys I liked if she could. She's been canceling our plans, and lately, she hasn't been talking to me as much. She's also been trying to copy me. my music taste, haircut, colour, friends, guys I like, the way I do my makeup, the stuff I'm passionate abt, etc. She also acts like she's closer to my mom. it's honestly so annoying but idk what to do cuz she can be a good friend at times.