just the reality of having strokes can get to the point where she's unable to swallow, and they may start talking of putting a g-tube in. this is the start down the slippery slope to hell on earth. i don't want to do into the details here, because it's distressing. but i see this day in and day out. lots of times i've seen truly wonderful, compassionate nurses get furiously angry with doctors who talk families into this. why? because this is going to prolong suffering in the worst way. yep, some gastro doctor will be able to drive his fancy sports car because he did a bunch of other consults and proceedures. i think old people are often victimized by the system.
don't take my word for this. become informed yourself. let your motivation be that you love her more than anything and you don't want her to suffer. she's 87, she's lived a good life. maybe she's got some more good years ahead, maybe not. if it gets to the point where you wouldn't want to suffer yourself like you're seeing her suffer, then that should give you your own answer. talk with the other family members to come to consensus.