I definitely wouldn't allow a make-up day. Did she get the day off with pay? If not her hubby probably did! Why shouldn't you? Why should you have to lose money just because there is a stat holiday! This is one of the reasons I don't take part-time daycare kids. It is always their parents who are asking for discounts. They need to realize there are lots of parents that will take that spot full-time and never think twice about having to pay for a stat.