"I do so appreciate the help that you gave us. More than anything?your encouragement and ability to ease my angst and concerns were a huge benefit."
"Thank you so much for your help. I could not have done it with out you. You are my angel. I hope some day I can thank you in person."
"Thank you for all your help. It is so nice to know there are caring people like you out there to help. We will certainly keep you in mind when it becomes necessary to put her in a nursing home long term."