Good morning,
I was diagnosed with Mitral Valve prolapse over thirty years ago, my mother also has it and has had corrective heart surgery.
It has not bothered me, once understood, even on high does of clen and ECA combined.
When very bothersome, (pounding or clicking) I will take 10 mg of Enderal, simple beta blocker and that normally solves the problem.
Gear does not affect the valve, at least for me, and I think she would be fine with something like anavar or primo.
FYI- There is a very informative MVP group in Birmingham,
Alabama- associated with the University of Alabama and the heart association, I have not been in contact with them for over ten years, but I would suspect they have a web presence.
Your post is strangely coincidental, I take an enderal to minimize symptoms about once every two to three months, (use to be daily). This morning when I got up, my heart was clicking and pounding like a Studebaker so a popped an enderal-then I read your post!