T.P.
Hey C.,
I married a man with 2 children. I have none. Be thankful he is standing his ground and trust you. 2ndly, there is nothing that can be done. Either the daughter will apologize or she will not. usually these are signs of a daughter that wants her momma and daddy to be together. Give it more time. It will get better. Otherwise counseling or a mediator, is a great option.