DH has primary custody and visits BM three times a year for a few weeks at a time. BM still ows us money for 2 flights as well as CS (she has never paid anything).
I was wondering what would happen if we will not be able to pay for SS's flight. DH is supposed to book the flight and BM has to pay 50%, but most of the time she doesn't. Can DH tell BM to book the next flight since she ows him money for 2 flights already. BM always comes up with excuses why she cannot pay. Or she says she'll send x amount, but the check never comes.