1. Ocean is giving you good advice.
2. go over to the "Socrateaser" section of this site and search on "3 elements of contempt"
3. Make sure that you can meet those three criteria.
4. Does your order SAY how she is to pay for this? Like do you pay it in full and then she reimburses you? Or can she pay the day care folks directly? Does it give a timeframe?
And yes, IMHO, if this has been going on since June....gather up your evidence, but file a "Motion" with the court and ask that they find her in contempt, tell her to pay up (again), add specifically how long she has after the cost is incurred to pay it, and to whom she has to pay it.
Amazing....simply amazing...