worried

i think that someone has found out my secret of being a vampire and they were not in my circle. i a little nerdy girl has found out my secret and now i am worried that she is going to tell someone that i may not like. i am really worried and i can't figure out what to do. maybe i should wipe her memory and make her forget all she has seen. maybe i should make one of my human familiars make her see i am not a vampire. idk i am jsut really confused and could need some help.