Is she my real best friend? Or is she someone I can't describe?

dude ditch her..real friends dont do that and dont let her toy u around anymore i wud deliberately cuss her out. ignore her and tell her to leave u alone. also to get revenge i wud pull pranks on her (but make it not obvious its you) but dont go too far with the pranks xD do only about 1-3 and if she leaves u alone after u ignore her and tell her to leave u alone then u can stop with the pranks lolz.. and stick with other friends