It really sucks that you're going through this right now.

I can completely relate. Before my diagnoses, I had many horrible violent manic episodes and it really changed the way my husband acted towards me. I was physically hurting him and emotionally draining him, too. With years of work between us, I came to the realization that the only reason he did that was because he needed to back off a little to protect himself from emotional damage. It really felt like resent and anger at the time. Things were very awkward and he really took a step back from "taking care of me." I had to learn to become self-dependable and monitor my own meds, symptoms, and such.

I believe it's possible that she's just pulling back to feel a little bit more normalcy to do her life, too. Overwhelmed, probably. I would mention it to her and tell her that you don't hold anything against her and that you feel she might be resenting you. Plain, honest, and simple conversations can fix/alleviate some of the tension.