Demi Moore Steps Into Rumer's Custody Fight: Aggressive Behavior Alleged

When you’re in the middle of a custody dispute, having your mother testify to the court on your behalf carries real weight—especially when that mother is Demi Moore. But the details emerging from Rumer Willis’s ongoing legal battle with Derek Richard Thomas paint a picture that goes well beyond typical post-split tension.

According to custody documents obtained by Us Weekly, Moore didn’t hold back when describing her observations during and after Louetta’s birth in January. The actress claims Derek“appears to want to dictate and control Rumer’s environment to his needs.”More striking are the specific incidents Moore documented: Derek entering the birthing tub“in an aggressive and sudden manner”without asking or showering, then becoming“angry and pouting, and making it all about him”when asked to leave. The next day, when Moore and Rumer’s sister Scout arrived to help clean, Moore claims she heard Derek“berate and angrily complain”about their presence and pressure Rumer not to accept their support.

The allegations extend to his handling of their three-year-old daughter. Moore stated that Derek interrupted her first time holding Louetta to demand“skin-to-skin contact”and refused to let Rumer swaddle the baby when she was“clearly cold.”She characterized him as having“absolutely no respect, care, concern, compassion or support toward anyone, especially Rumer and the baby,”and noted that Rumer handles 100% of Louetta’s financial and physical support.

Derek’s legal team, represented by attorney Michael J. Kretzmer, is firing back hard. Kretzmer told multiple outlets that the allegations are“bombastic and dramatic, but lack substance and factual support”—a direct refutation that signals this battle is far from over. The split between Rumer and Derek happened back in 2024, but the custody fight didn’t formally begin until last summer, making this a case that’s still unfolding.

What’s telling here isn’t just the accusations themselves—it’s that a major Hollywood figure is willing to document detailed observations in court filings. When a parent’s behavior during one of life’s most vulnerable moments becomes custody court evidence, it suggests the concerns run deeper than typical parenting disagreements. Whether the court agrees with Moore’s characterization remains to be seen, but her involvement signals that family dynamics are at stake beyond just the custody arrangement.