Thing is I don't even feel about her that way. It just sucks that it had to stop abruptly and I am left guessing if I did anything wrong.
You probably didn’t and even if you did she should at least give you the reason and an opportunity to explain.
You need to think about it a different way. That is if something bad didn’t happen to her but usually there is a slim chance of that.
If she didn’t care enough about you to at least say good by and give you closure then it is obvious you didn’t mean much more to her than the regular $$$. in which case you are probably better off than getting even further attached to her.
Many SP deal with a lot of emotional issues and it is quite frequent that they just decide to quit and disappear without a hint.
It must be such a draining and difficult profession to keep your head straight in.