and although she's at rock bottom I'm just relieved to have heard from her... does it make me a bad person to not be as obsessed as I used to be with all the drama... .
bad/good - no judgement from me and I don't see why you would want to judge you either. Obsessing is not healthy, this much I know.
or does that mean I'm getting healthier? I still feel really bad for her but I know that their is nothing that I can do to help her inner turmoil... .
Healthy people - people with emotional boundaries - can feel empathy, but not solve the problem for someone - do what you can, but ultimately, we are all responsible for ourselves - BPD included.