I certainly understand why you think it's disrespectful for her to lash out at him, which it is. A child should know better, but that's also his fault for not spending enough time with his children and teaching them how to respect their parents. Being present, emotionally caring, showing your kids the right amount of love, and being supportive is far more important than money. I've seen this happen too many times with wealthy families. The mother or the father or both are hardly present, and when they are, they're almost completely emotionally closed off. Then the kids grow up to be completely morally bankrupt people, or drug addicts, or alcoholics or something. It always ends up a mess😮‍💨. You should also never let your kids find out about your other siblings through social media, like he has; that's just... wrong. So, back to you're original point about her lashing out. She clearly doesn't give a shit about living on his dime, she just wants a loving father that's more present in her life. Money can't replace a loving parent.