I saw the same T for about 25 years!! However, I paid out of pocket and only saw her once a month. She retired almost 2 years ago and I got her a gift card to a really nice restaurant near her and put it in a nice card and wrote how much I appreciated all of her help over the years. She let me take a picture of her, gave me a hug (the first one ever) and gave me her email address in case I ever remarry, she wants me to email her! We were never that close, so saying goodbye wasn't very tragic for me.

Good luck!