Per my Divorce Settlement 15 years ago my ex carries the medical insurance on my now 17 year old daughter. While dirt-bike riding with me, she made a jump that went terribly wrong and got hurt. I told admissions "My daughter's mom has the insurance and I don't have a card, but here's her phone number." After 2 cat scans and a few x-rays we learn that she has broken both clavicals (collar bones). Two weeks later my daughter's mom calls me and informs me that she got a new job and my daughter doesn't have any medical insurance and didn't at the time of the accident. She then called the hospital and told them that I am responsible for the bill which totals over $6400. The hospital makes me the guarantor of the bill. Legally, the ex is 100% responsible for the bill. The question is how do I place responsibillity back on her without costing me another $2k in attorney's fees yet again? Thanks for reading & replying.