Went through this too, question first..
-Does the co state that for payment from you she must give bills to dad within 15 days? If so,
1. Just don't pay them. Send cert. return receipt letter with statement, "received these bills on ___ date, which were ____ days late based on co stating 15 days. These are no longer my responsibility to pay per co.
2. State, "if in the future you would like to follow the
court order, please respond and get these to me within the 15 day time frame."
3. Make her take you to court. Don't waste your money. If co is not specific, I would suggest it be changed asap to alleviate this problem.
*This happened to us and we did not have to pay. (but our co was specific on how long bm could hold the bills, ours was 7 days and we had 30 days to pay). Good luck-nosonew