Being Grateful

My elderly friend Jo lives alone with her dog, Sir Charles Lowe Throckmorton. She calls him Charlie for short, but we all know he's royalty.
Jo is almost completely blind, has constant dental and dietary problems, but you would never know it. She is the happiest, most grateful person you've ever met.
We used to live next door to Jo. One of my first memories of her is after we moved in we were talking to her and she stopped abruptly. "Let's get something straight," she said. Adam and I both froze. I was worried we had somehow offended her and she was about to put us in our places. She put us in our places, but not in the way we were expecting.
"My name is Jo," she said.
We had been calling her Mrs. Throckmorton. And thus was the beginning of a beautiful friendship. Before work, I would go to her house and have a cup of coffee. I would walk our dog Wesley and her dog, Bucky, around the block and then sit down in her front yard for coffee and conversation.
I started purchasing her groceries with ours. Because she's blind, she obviously can't drive or see items on the shelves. She gets around her home because she's lived there since the 1950s and knows exactly where everything is.
Seven years later, I'm still buying Jo's groceries, she still makes me coffee when I come over, and she's still exactly the same wonderful lady she's always been.
Jo is the most grateful person you will ever meet. Whenever I bring her something I've baked, she eats it and exclaims, "Now I don't want anything better than that!" Or if I give her a gift, she replies, "This does my heart good." She is genuinely grateful for anything she receives, from a paper clip to a something big, like Adam trimming her trees. Her thanksgiving is always at the same level. I once teased Adam that she would thank me for a dirty diaper, and one day she did.
When Claire was a baby she once had a gigantic poopy diaper at Jo's house. I apologized for having to place it in her trash, and Jo said to me, "It does my heart good to have something of Claire here at the house."
I wish I was more grateful for the things I have, even poopy diapers.