Did you take her for a checkup? By the sounds of it she had another stroke.
Yes, to the comment above. It's important that you know the possible symptoms of a stroke after her having one 2 years ago. Those having had an eschemic stroke have a 25% chance of having another one within the next 5 years. The longer you wait, the more risk you put your mother in. If she did have a stroke then she may need something like coumadin and also possibly other treatments.