This view ought to have a fair hearing. I know a woman with bipolar disorder and have seen the drugs she has to take. On a visit with us, for a few days, she brought a grocery bag full of her pills. Yeeks!
Besides, if the doctor is suspended, voluntarily or otherwise, there is no way the state is going to get a murder conviction against the parents.
My MIL in France was issued by her euthanasia loving doctor huge quantities of tiny but powerful and lethal pills to "calm her down". They would be split into tiny fragments for light doses. It was enough to wipe out a small town. Overdose would have been incredibly easy. Maybe that was the point.