Is Kim Richards about to leave another reality TV show behind?
The former "Real Housewives of Beverly Hills" star threatens to quit "The Mother/Daughter Experiment: Celebrity Edition" in a sneak peek of Tuesday night's new episode, after an exercise leaves her very distraught.
During the episode, the mother/daughter duos are challenged to visit the mock graves of their loved ones, as they revealed how they'd say goodbye.
For Kim, it got a little too real. We're told she didn't want to do the drill at all -- saying that it reminded her of her mother's death too much.
"My mom freaked out," daughter Kimberly -- yes, they're both "Kims" -- says in the clip. "She did not like the cemetery, the funeral, the death, the loss, none of it."
"Everything was great up until you caused a problem," the teen then says to her mom. "I get that you're sensitive and this is going to tear you down, but I don't see it that way."
"It was way too much for me, I just wanna go home," the 51-year-old admits in a confessional, before telling her daughter, "I just want to go."
Heidi Montag also had a breakdown during the exercise when she visits Darlene's "tombstone" -- and appears to have a hard time breathing. "I feel like I've hurt you the most of anyone in your life," the former "Hills" star says through tears. "I was just so self-involved and I had so much going on and I was so confused and I never wanted that to happen to you. I'm so sorry."
We'll see who decides to stick around when "The Mother/Daughter Experiment: Celebrity Edition" airs tonight at 10pm on Lifetime.
Check out the video below to hear Montag reveal the root of her problems with Darlene.