It was done to me. My first wife abandoned us when my son was an infant. It was rough but I survived. One evening I was at dinner with some friends. I had to change the baby, there was no table in the men’s room. I asked a lady leaving the ladies room if it was empty and she checked for me, gave me the okay. While I was trying to get my diaper bag sorted she came up and offered to change him. I told her I had it but she insisted, and put her arm around me. Apparently I’d been holding in a breakdown the whole time and she saw right through it. I cried for a minute while a total stranger changed my infant son, thanked her profusely, and went back to dinner with my friends carrying a little less weight on my shoulders.
No clue who she was, but she was an angel to me that night.