Let them fall.
The other day, my daughter’s caretaker approached me after dropping them off at school. She was visibly upset, to the point that she looked like she was about to cry. She asked me if she could be assigned to do household chores instead of watching over the kids.
After probing, she explained that she missed packing my daughter’s books, and she felt guilty for leaving it behind. She was afraid that the incident would upset me. Personally, I was quite surprised by her willingness to accept responsibility even when she wasn’t to blame.