That was so very sweet of that woman. What a nice thing for her to do for strangers! I hope your mother recovered well from her illness.
Was the woman at the hospital, a nurse or employee? Did you get to see her after she gave you these things?
I don't know if you are into crafts, but maybe something like a picture of your family, on a really nice plaque of some sort, and then maybe a nice poem, or a thankyou of some sort at the top of it, with the lady's name engraved would be nice. She could hang something like that in her home, or at the hospital, so everyone could see what a kind and caring person she is.
I think something of a personal nature would really be nice!
