Why does she want to go to your doctor appts? Did she really say (or insinuate) that she wants to tell your doctor how to run your medications? If that's true, then I don't blame you for being concerned. No one should try to play "doctor". If you're not sure, then maybe she's genuinely concerned and wants you to get the help you need?

I obviously don't know you, but I'm just trying to understand her point of view. It sounds like she's really worried about you. And this may be a stretch, but I'm wondering if she thinks you're not taking good care of yourself when you're off medications. That could be why she said "be on medication for life because I don't practice mindfulness, exercise and eat as healthy as her".

Yes, obviously mindfulness, exercise, and healthy eating aren't necessarily enough to help with bipolar. However, her point is that she believes you need to come up with healthy coping mechanisms when you're off medication so that you can thrive instead of suffer. She just doesn't know which kinds of coping mechanisms are best for you because she's not a doctor or a therapist. That's why she gave examples, albeit sh_tty ones.

I'm not trying to be a jerk at all! Just trying to play devil's advocate.