Tim, sorry to hear the news about your mom. I wish her a speedy recovery.
I know about strokes. My dad had many before passing away 2 years ago thanks to diabetes.
The first couple he had, were pretty bad at first, but I was amazed how fast all the signs disappeared.
One side of his face slumped, couldn't swallow, had to have the thickening stuff added to his drinks, lost use of one side...etc. he even took a short trip into dementia for a couple weeks, which really scared us. In spite of all this, after a few weeks and a lot of rehab, they all went away.
The hospital rehab was WELL worth it. If they offer it, it will probably help her a lot.
Best wishes and prayers,
Bob