My grandfather just had two recently. Anyways if you notice anything different about her at this moment like if she's looked like she has aged or cannot move any parts of her body properly. Example: she can not move her arm or lip properly that is a pretty good sign she has undergone a stroke
. Strokes can be fairly deadly and causes brain cells to die which can cause a lot of problems. I know people who have undergone a stroke and they didn't even know it. I'd get her to a hospital as soon as possible because if she did have one there is a pretty good chance she may have another one.