Thank you for your generous spirit. You secretly helped pay for our groceries while my husband was grocery shopping with the kids. When he realized what you had done, he was so dumb struck he didn't know what to do or say.
Now, of course, he wishes he had met you and thanked you personally.
In case we don't cross paths again, know that your random act of kindness was sincerely appreciated. We are inspired to continue your generosity and repeat the kindness you have shown us to someone we have not yet met.
Thank you again. Your gesture was worth many times more to us than the monetary sacrifice you made.