My mom is the same as yours in many respects. She never honored my boundaries. Now that she is a few hours drive away, I feel some relief. Moving out from my mothers house was the best decision I had ever made, that and going to college. Parents want the best for us and this is what they are thinking when they undermine what we are trying to do. We sometimes need to learn our own lessons though. There isn't much you can do to change her; I am sure you have heard that! However, you can change the way you react to her. Have you ever said "it isn't your business"? Get yourself together, get your own life and your relationship with your mom will improve. I am assuming you are an adult by the way. Throw the meds away. Get yourself feeling better soon :-)
Meachie