My mother had a stroke today. She seems fine now. Is everything OK?

She went for an MRI, but no results have come back yet. She had a stroke at about 3:30 pm today and when I went to the hospital about 3 hours later, she was talking and moving normally. My sisters said her whole left side was paralyzed for an hour and her right side of her face was drooping. Is she going to be OK? The reason for her stroke was most likely the catherization she went for a few hours before (she was supposed to get open heart surgery Thursday, which is tomorrow, but no more because this stroke)