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![Mary Cosby’s Sister Claims Mary “Consol[ed]” Her Step-Grandfather Robert Cosby after Her Grandmother’s Passing, and They Were Doing “God Knows What” in His House, Plus Filmmaker Says Everything in New Documentary Was “Fact-Checked”](https://realityblurb.com/wp-content/uploads/2025/12/Mary-Cosby-BravoCon.jpg)
Credit: Bravo
Mary Cosby’s sister alleged in a new documentary that Mary “consol[ed]” her former step-grandpa Robert C. Cosby after the passing of his wife Rosemary “Mama” Cosby – Mary’s grandma – and they were doing “God knows what” in his house. Meanwhile, a filmmaker behind the doc said everything was “fact-checked.”
After Rosemary died in 1997, Mary married Robert. Rosemary founded Faith Temple Pentecostal Church, where Mary is now considered the “First Lady.” The marriage reportedly led to Mary’s estrangement from her mother, and castmates on Real Housewives of Salt Lake City have addressed claims that the church is “cult.”
In a preview of the new documentary, The Cult of the Real Housewife, Mary’s sister Denise Jefferson Odinaka recalled the day of Rosemary’s funeral.
“The day that I went to my grandmother’s services, I picked Mary up, and Mary was disfellowshipped,” said Denise, via @bravosnarkside on Instagram. “I just remember me and her had a conversation about it, and I think Gramps went on this mission to try to revive her, spiritually. Next you know, she’s in his house and they’re doing God knows what.”
“Robert, he was devastated, he had just lost the love of his life, and then you’ve got this young girl who is her granddaughter, who is consoling him,” said Kim Cosby, Dan Cosby‘s wife. “He told us they went to dinner every night, and she’d make him talk about Mama, and [that] it helped heal him.”
Denise added, “I remember my Gramps bought Mary a BMW. [I thought it was] random, [as] there’s like 25 grandchildren. I’m right here, you know, I’m waiting for mine. But anyway, she was showing him a new way of living in Christianity, you know, the things that we just weren’t doing, you know, like the drinking and stuff.”
Around the same time, one of the filmmakers behind the documentary shared that everything was “fact-checked.”
“We did follow — and it’s important to say — journalistic ethics, so it wasn’t just people saying anything that came into their mind,” said Julian Hobbs on Reality Life with Kate Casey, via @thebravobabe on Instagram. “Everything had to be fact-checked, legally checked, double-sourced. People sent things that didn’t make it into the film, but I feel confident that from these people’s alleged perspective … that this isn’t just wild speculation about what’s going on at Faith Temple.”
The Cult of the Real Housewife airs January 1 on TLC.
