Hi @Poppy1 and welcome to the forum.
You or your mum can phone the Stroke Association Helpline 0303 3033 100 for any practical or emotional help. They can also arrange a weekly one to one chat
https://www.stroke.org.uk/finding-support/stroke-helpline
https://www.stroke.org.uk/finding-support
Hope these links will help you. I know it’s going to be hard to begin with, but the hospital won’t send him home without a care package in place. But as you say, your mum will need some support too to cope with these changes and seeing her husband this way can be heart breaking. I know it’s a slow climb to recover but it will continue get better over the next few months so don’t let get disheartened. It’s always 2 steps forwards and 1 back.
Take a look around on the forum for useful tips and check out this post as it has some useful tips and advice and also links to other useful posts on the forum.