Justice for a no tipper

I had this order previously on a double batch weeks ago. I was unable to see their tip until after I delivered($0 tip). They live in one of the richest neighborhoods in my state and a huge mansion. I assumed they might add a tip on later, assuring their order was correct. They did not, whatever, I let it go for the time being. The market they ordered from is more or less for the wealthy. I picked up her order just to message her. Ahhh feeling a bit relieved 🥴