Hello there this situation must be causing you so much distress. The only experience I have had that is similar is when my mum had an accident that caused a head injury leaving her a very different person. She was not stopped from driving but when sitting alongside her driving I had major concerns about the safety of her driving style. She had often driven by daughter around at the time (she was around 8) and was very keen to do so again. I worried for a long time about whether to let her or not. In the end, I decided to refuse her driving my daughter for both of their safety. In time, we dealt with mum’s safety too behind the wheel. Whilst this is not the same situation the similarity lies in the fact that you have to go with your gut feeling on these things. The fact that your kid is not receiving medication etc is very concerning and I sense from your story that you have major concerns. All this stress will be affecting the kids too, they pick up on anything like that. I hope this is of some help and wish you well in making the decision you know is best for your kids, and your, wellbeing.