Can you help? I have an anxiety problem...?

Hey what's up? Alright, this girl from school has been giving me problems a lot, and she has some serious issues to deal with. She keeps sucking up to me after she hurts me and gives me an anxiety attack. Well, her mom is no walk in the park either. She came to my mom's store and said 'There are some things about your daughter that you don't know. And I am gong to give you a report when I come back. ' Guess what? She hasn't come back to her store yet. I try to tell my mom everything. She knows everything. But I'm afraid that there is something that I didn't tell her, but I don't know what that is. I mean, anyone can come up to my mom's store and talk crap right? And I try not to do anything wrong for fear of another anxiety attack. Am I worrying for nothing?