I just wonder why she thinks she owns you. Probably contact information was exchanged and you call her once in a while.
I think that bad things start to happen when we forget who they are and we start to treat them how we'd like them to be, by doing so, we mark ourselves as "desperate targets". They understand that the only reason why we keep in touch with them is because we don't have someone close by to keep us busy, entertain us.
I might be wrong but using myself as a model, I know that most of the time, like 100% of the time, we attract what happens to us. Just remember who she is and who you are.
Be safe!