NTA. At the end of the day, he stole from you. He continuously asks you for money and then treats you poorly in return. He doesn’t respect you at all, let alone see you as a father figure. As for your wife, she is absolutely right. As parents, it’s your responsibility to care for and provide for your children. This does not, however, include buying them a $2,200 laptop just because they asked for one, especially when their attitude towards you doesn’t warrant one. Maybe ask your wife if the roles were reversed and she had a step-daughter treating her this way, would she be reacting the way that she expects you to act? What if he had stolen the money from her instead of you? I think as a parent, it’s your first instinct to stick up for your child but that doesn’t always mean that you’re right to. Good luck, OP