Celebrity Celebrity Family Dia Nash Says Mom Niecy Is the 'Most Herself' She's Ever Been in Her Life (Exclusive) "And at the end of the day, you just got to be yourself," Dia recalls telling her mother of brushing off unwanted opinions By Esme Mazzeo Published on July 15, 2024 10:00AM EDT Close Dia Nash and her mom Niecy Nash-Betts in July 2024. Photo: Robin L Marshall/Getty Dia Nash is celebrating her mom Niecy Nash-Betts' happiness! The 24-year-old actress — who recently made her Lifetime movie debut in Sister Wife Murder — exclusively tells PEOPLE about the advice she gives her mom and how Nash-Betts, 54, is becoming the best version of herself. "Sometimes [we’re] having conversations and I just be like, 'You don't care what them people think. We ain't got to care what them people think,'" Dia, who costarred with her mom in Monster, says. "People are going to think what they want to think, they're going to say what they're going to say. And at the end of the day, you just got to be yourself." "I always tell my mom to be herself, and I feel like right now she's probably the most herself that she's felt," she adds. "And I'm happy for her." Dia Nash and Niecy Nash at the 'Sister Wife Murder' premiere in July 2024. Gregg DeGuire/Variety via Getty Dia Nash Is Fooled by Matthew Daddario's 'Confidence' in Sneak Peek of Lifetime's Sister Wife Murder (Exclusive) Nash-Betts' youngest daughter celebrated her Lifetime movie debut alongside her mom, her grandmother Margaret Ensley, her father Don Nash and Nash-Betts' wife Jessica Betts at the movie's premiere on Thursday, July 11 at the Regal at Sherman Oaks Galleria Theater in Los Angeles. The Emmy winner wed Betts, 42, in August 2020 and told E! at Emmy Awards in January that her secret to a happy marriage is to "skinny-dip often" and "drink lots of champagne." On an October 2022 episode of The Tamron Hall Show, the Never Have I Ever star said Dia prompted her to think about how she identified on the sexuality spectrum after her relationship with Betts began. The PEOPLE Puzzler crossword is here! How quickly can you solve it? Play now! Margaret Ensley, Jessica Betts, Niecy Nash, Dia Nash and Don Nash. Gregg DeGuire/Variety via Getty Niecy Nash's 3 Kids: All About Dominic, Donielle and Dia "My daughter was like, 'How do you identify?' I said, 'Huh?' " Nash-Betts recalled, adding that she answered, "Black and your mama," She said she watched shows on the topic of sexual orientation and labels with Dia, but they confused her. ) (L-R) Jessica Betts and Niecy Nash-Betts in February 2024. Jeff Kravitz/FilmMagic Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. "If I have to coin it in the moment, I would say I'm Jess-sexual,' " the Claws star recalled telling her youngest child. "I've never looked at anyone, male or female, and seen them the way I see her. So I don't know. But right now I know I'm happy, I said, 'Write that down.'"