My 95 year old mother has vascular dementia. She was put in rehab for a while to buy time and get some strength back before taking her home. A couple of days ago she fell out of wheelchair onto floor and hit her head. She went to hospital to be checked out said all tests were negative. And is back at rehab. Yesterday they took bandage off a purple bruise from forehead all the way past eye on one side. She is sleeping a lot more. I am afraid this injury were end her life sooner then anticipated. Should I be worried.