Turned out there was an older gentleman sitting in the booth behind me who was finishing his food and counting out change on the table in what we assumed was an attempt to count out enough money to pay his bill.
My mom, no questions asked, without knowing this man or his circumstances, quietly asked the waitress what his total was and paid his bill. And then we walked out of the restaurant before anyone could say anything to him.
She is my hero. I love her.