If I were you, once you responded to mom that you needed payment and she said she would pay you, I would have stopped it at that point. I try not to get into back and forths with my daycare parents. The madder you make them the more they will badmouth you in the community. Just my opinion. Best of luck to you! Remember, for every bad match out there, there are 10 good ones. I think most of us have a family in our care that is a bad match. We just don't all have the guts you had to be able to terminate. Good job!
