I don’t believe the low blood sugar theory either. It was said she was a diabetic but untreated. Highly unlikely that the problem would be low blood sugar. More likely the opposite. Who has diabetes and is untreated except by choice? Usually they put you on some type of drug like Metformin to start.
When I get very low blood sugar I get very tired and weak. I may get a bit grouchy but never anywhere near homicidal. In fact I’m usually too weak to even walk. And it doesn’t sound like she had passed out but was awake and aware.
Yes. Your description of your experience matches all other real diabetics I have known. This description matches drug abusers I have known.