Sister Wives' Christine Brown is at a breaking point in her marriage with Kody Brown.

On Sunday’s upcoming season 10 finale of the hit TLC series, Christine breaks down in front of her sister wives as she brings up the idea of moving back to Utah — something she had previously discussed with Kody — and admits her feeling that shecan no longer “do marriage” with her husbandof more than 25 years.

Sister Wives

“When we were there, you guys all talked about Utah was home, and the mountains were home, and family was there,” Christine says, wiping away tears. “So I thought that you felt the same.”

“I’m sorry, I just don’t even know how to make this okay for you,” Janelle, 51, tells her.

Christine Brown.tlc

Sister Wives

Seeing her sister wife struggling,Meri, 50, asks Christine to join her for a walk. “Come here,” she says as she grab’s Christine’s hand.

After the pair leaves the group, Christine voices her exasperation. “Meri, I can’t do marriage with Kody anymore,” she confesses.

Kody Brown and Christine Brown.Christine Brown/Instagram

Kody and Christine Brown

Watching the situation, Kody, 52, is left bewildered. “I don’t know what just happened. I mean, I’m sitting here going, ‘Wait a second. Why didn’t you pitch it to them? You were enthusiastic about it.’ It seems like she didn’t even try,” he tells cameras.

The season 10 finale ofSister Wivesairs Sunday at 9 p.m. ET on TLC.

source: people.com