Hi Hannah,
Quick answer to your questions is no it didn't clear up, and yes I have a shunt. My recovery from the shunt surgery was unusually quick, I was discharged before the other two people who had the same Op even came round.
On the support side, try Headway as they are experts in ABI (Aquired Brain Injury) and they have centres all over the country. Different Strokes is an excellent organisation, and they can be a great help as well. Above all else try and find people in the same situation as you, there will be more than you think around. The support that I got from just being around people who knew what both me the patient was/is going through and most importantly the people close to me were experiencing was huge.
There is always hope, and recovery is dependant on the person, don't let anyone fob you off with formulaic answers. The worst I heard was a friends doctor told them that there was a six month "rule", and 95% of recovery in SAH occured in the first six months. Utter rubbish. Others I know are still experiencing improvements five years on. So don't expect it to be over night, it's a long road and your mum needs you more than ever before, but don't neglect yourself.
Cheers
Scott