You sound like the kind of person we would be blessed to have around. You are kind and caring for sure. There is another side to caring, its the need to be needed and maybe its pretty strong in your life.
I think you need to move on,
Make new friends, put your kind heart into other projects, volunteer, find a new hobby. But move on.
If he contacts you, review the dynamic, be honest wuth him, stop doing for him. Tea n chat, no more. He has made it very clear. You dont deserve financial recompense, his lazy daughter does. Low, low blow. Walk away.
Look at this as a fresh chapter, wishing you well.