She'll be OK. I recently had a quadruple heart bypass
and I didn't even know my arteries were 100% clogged, until I had that little heart attack
(I am just alittle older then your mom). There was no heart damage, which is a good thing. But, I see people every single week who have had a stent
or two put in or a bypass and more...And some people have had more than one surgery. I think your mom will be fine, as long as she makes sure her blood pressure and cholesterol
are good, and she exercises, and eats reasonably and sees her doctor regularly, for any tests she might need. Also, my husband has been in the medical device field for years, and we are pretty much up to date on all the great, new technologies out there. Survival rates are so much higher now, then in the past. So, put your faith in the doctors and your Higher Power and be positive.
I wish you all the best!