It looks as though all of our prayers have been answered. My mother had her angiogram this afternoon, and the results were much better than we could have ever guessed.
Her angiogram showed that she had absolutely NO blockage in her heart arteries. There wasn't even any blockage were she had the heart attacks. Her doctor said that what apparently happened was that her arteries basically had spasms that blocked the flow of blood to parts of her heart.
Because there was no real blockage and there is still blood flowing to the damaged parts of her heart, there is a possibility that some of the damage can be reversed. We were so happy to hear that! My mother was definitely in a much better mood once she heard the doctor say that.
So, the doctor said that he's going to keep her in the hospital and see how she does over the weekend and then he may release her on Sunday or Monday. Once she is released, he'll follow up with her in his office and keep her on medication (and probably therapy, too). He said that after two months, he'll check to see how much of her heart damage has repaired itself and how much is permanently damaged.
So for now, her prognosis is good. Please keep praying for her. It's obviously working!