Candy, if you would but thank her from time to time, that would be "grand." If you can manage a card of thinking of her when you do, that would also be terrific. I know it seems a small gesture, but not doing so hurts more than most ppl realize. If you find a card or quote or something, even a joke, that she can connect with (due to her avocations?) that would make it more special.

Since you are obviously appreciative, I think anything you do will be fine.