Phew! Well if the teachers don't see a problem at school, I would put ADHD at the bottom of the list for now. It's not just about high energy levels, it's also got to do with inability to concentrate/absorb information, sit still etc.

Have you had her hearing checked?

It's very tiring (esp with a newborn) but you have to tighten those boundaries and keep them tight for a good few weeks at least. You have to jump right on top of the drawing etc - make her clean it off. If you threaten to take the bed away you HAVE TO DO IT.....so maybe not threaten stuff that means you are being punished too

DS is an energetic Aspy, but when the boundaries are watertight he gets it.