My 92 Yo Grandmother Knocked Over By Dog Has A

My 92 yo grandmother knocked over by dog has a concussion. Subdural hematoma. Dr monitoring to date w CScan. Now 30 days out. Her strength has wained. Wakes up dizzy and thru the day continues to do what work she has been used to, but tires her easier. She is sleeping more. She has not had one bit of dementia prior to this, nor does she show any now. What's the turn around time on reabsorbtion and her getting back to baseline??