Who needs an angel? Sounds like you ARE one to your dear Grandmother...taking her to get her chemo, that is so sweet! (I'm a chemo nurse).
I know you are preparing for surgery yourself, and I wish you all the best, and pray for you a speedy recovery. Don't forget to take to the hospital with you: slippers, chapstick, robe, and a fan. I will keep you in my thoughts and prayers! See you on the losing side!
God Bless You!
Hugs,