Why does this girl bother the hell out of me?

This girl when I first met her stalked me.And she would annoy me for no reason and say it was fun.And she would tease me.And she would just be weird.She liked clung to me like tape.Like once you talk to her she never shuts up.I feel bad.Does she like me or something? Because I threatened to tell on her because she wouldn't leave me alone once.And she got really scared.And I didn't.Also her friends and her act real silly around me sometimes.And she and her friends used to be mean to me.And now strangely they're nice to me.Idk why.Does this girl like me or something?