Most Helpful Girl
Most Helpful Guy
She is weird and you should have guessed that before. But take it from where you are now. Drop her completely. Don't answer her. Block her if necessary. And don't worry about the police. First, separate jurisdictions (across international borders, yet) and she has nothing on you. Unless there is something you have not told us. And as long as you totally avoid her from now on, even harassment would not be a good charge.