Christina Haackhad to pick her battles while filmingThe Flip Off.

“I think we all thought there might have been more [arguing], but there was nothing,” Heather says.

“Which is shocking,” Christina cuts in.

“She was too tired from all her other fights, she didn’t want to fight with us,” Tarek adds with a laugh as Heather says Christina “threw in the towel" when it came to any potential trash talking with them.

During filming, Christina’s marriage with her third husband,Josh Hall, was collapsing.

The Flip Off Tarek El Moussa and Christina Hall, Heather El Moussa, Josh Hall

A PEOPLE exclusive first look at the series' two-hour premiere, airing Jan. 29 at 8 p.m. ET/PT, revealed the then-couple’s tense relationship, includinga blow-up caught on cameraand later, the momentChristina told Tarek her marriage was officially over.

Still, Christina tells PEOPLE, she never considered pulling out of the show.

“I kind of knew it was going to happen,” she admits of the split. “I’d been talking to both [Tarek adn Heather] about it. They were aware that there were issues, and it’s something that we had to sidebar on in regards to how all of us were going to handle even filming with Josh, because there was already some difficulty there.”

Christina says Tarek and Heather became an unlikely support system during that difficult time. “They weren’t surprised, and they were also very, very supportive,” she shares.

“Ultimately, we are all family, and it’s hard to see her go through a challenging situation,” Tarek explains.

Addressing Christina, he adds, “I know that you guys did work hard. You guys tried to work through it. I know you really put in the effort, and in the end, it just wasn’t a good place for her or the kids. I think they’re all in a better place now.”

Heather Rae El Moussa, Tarek El Moussa and Christina Haack appear on “The Jennifer Hudson Show”

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TheFlip Offpremiere documents the time leading up to andimmediately after Christina and Josh’s split,leaving Christina to rely on her trusted team of experts to succeed in the competition.

source: people.com