The days she gave you are not technically a Holiday though, and if you are open and she was already scheduled to come, unless you have something in your contracts that states they are allowed so many days no pay with out any time frame to let you know....she owes you for the days she had her child on your schedule. It is nice of you to offer yourself during the Holidays most providers close through Christmas and Newyears, I am sure you would prefer to be off with your family, given you are offering yourself and she was on the schedule up until now?...she owes! period! happy holidays to her! you too!