I had a similar medical/insurance situation with my parents. I used to give consent for my doctors to share information with them, but after everything fell apart, and their insistence that it was because of medications rather than living conditions and serious psychological issues, I updated my information at their offices. If they wanted to know what was going on with my treatment my parents would have to discuss it with me. I did this primarily because their involvement was causing far more stress than benefit.

I'm curious if you've ever done a few months of magnesium supplementation? It's not something that shows up in bloodwork unless it's extreme, and it doesn't have to be extreme in order for it to cause issues. I'd suggest getting bloodwork for vitamins and minerals before bothering with stuff like neurotransmitters as a vitamin/mineral deficiency can be a cause of imbalances in neurotransmitters. In addition, changing to a healthy whole foods diet can make up for many other deficits, as will regular exercise and sleep. Even when doing all of the above I'd suggest taking some ionic magnesium for a few months and seeing if it helps.