Way too early to make any of those assumptions...
You have no idea what damage the brain has sustained until she is gradually brought back to a less sedated state and tested, but that won't happen until swelling from injury and surgery has gone down and she is stable enough to do it.
My grandad had a massive brain bleed and should no way be even alive, let alone functioning.... the first hospital gave up on him, then a university hospital said they'd "give it a try".
He had surgery to relieve the swelling ,and we were told, he probably won't even survive the night.... then we were told, even if he does survive, he'll be so brain damaged, his life won't be worth living etc etc... anyway time goes by (all these things take time - which is why you won't get daily updates because there is nothing to update)) and they gradually brought him out of sedation to test his brain function - simple tests - blink, wiggle toe, lift arm etc etc... and all were good - encouraging signs... long story short - he made a full recovery, against all odds of even surviving... Doc's were amazed.
So there is plenty of hope - Brain injury is a bit of a mystic science.. medics can do very little other than monitor and let nature take it's course in healing. The human body is pretty tough...
Knights of Columbus, that hurt!
By the beard of Zeus!
Great Odin's raven!
Son of a bee sting!