I think the first thing you both need to do, though, is to adjust your attitudes in the situation. I know this sounds a bit accusatory, but hear me out. You describe Emma, who is a child, as a "spoiled brat." You don't just see her behavior as bratty, but her personality as bratty and somewhat irredeemable. Children can pick up on when they aren't liked, and-like it or not-when you married Diana, you also made a commitment to Emma that includes being there.
"My daughter's dad and I really pride ourselves in the fact that we have not fought in front of her since she was like six months old. She's almost five now, and we don't talk crap on the other parent in front of her," TikTok mom, angelehlers_, explained. "So, she has no idea why we wouldn't be friends, why we wouldn't all hang out. Like she just genuinely just thinks like we're all just like friends, like her best friends,"
My parents were never upfront with me about financial matters and basically left me flat footed when it came to learning to be an adult. I never wanted that for my son and have been frank about covering the costs of college and his car when he graduates. He has been working since he was 14 and saving half his paycheck. He also is taking dual credit and AP classes. He will essentially start college off as a junior if he plays his cards right.