Now, in an exclusive sneak peek at Friday's Kendra on Top, Wilkinson and her friend Bridget Marquardt have an unofficial Girls Next Door reunion and talk about some of the emotional fallout they experienced both while the show was on air and since it ended.
During the conversation, Wilkinson confides in Marquardt that she thinks it might be best to squash her feud with Madison.
"Do we owe it to ourselves to hear each other out? For sure," says Wilkinson, 30.
That said, she remains skeptical it'll happen, saying, "But if that never happens, then that's the way it's going to be, I guess."
Wilkinson has had no qualms about exposing the fracture in her relationship with Madison, 36, during the years they lived together at Hugh Hefner's Playboy Mansion.
"I just never saw hope and friendship with her," she tells Marquardt, 42. "There was never a moment where I can say she felt real to me ... not one."
Agrees Marquardt, "I definitely feel like you and I had to have each other's back for some of the way. Because if we didn't it would be so lonely there."
"It was Holly and Hef, and it was me and Bridget," Wilkinson says, now able to laugh at the divide in the Mansion.
For her part, Marquardt hopes her two friends can find some peace for all the Girls' sakes.
"Kendra may not agree with everything that Holly wrote," she says in an interview, "but by lashing out and having this public feud, she's really undermining what we worked so hard to build."
Kendra on Top airs Fridays (9 p.m. ET) on WEtv.