Well I gave her the Kindle today when we went out for lunch and she's thrilled! I'm so happy! I don't see her more than every couple of months, but I'm hoping she'll keep me filled in on whether she finds it useful.
She definitely preferred the size/weight of it to the tablet she bought (which was one of the smaller tablets, but I don't know what the weight difference was).
Thanks again for everyone who offered some help.
