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Kim Kardashian continues to be the mediator in her family's arguments.

In a preview for Sunday's I Am Cait episode, we see the E! star try to explain sister Khloe Kardashian's defensive remarks to Caitlyn Jenner regarding comments made about mom Kris Jenner, but also agreeing that some of the things Caitlyn has said was hurtful.

"Khloé sees my mom upset and so she gets defensive," Kim began to say, but Caitlyn interjected, "And she doesn't know anything about my side of the story."

"But, that's what kids do," Kim explains. "She is gonna get defensive."

Kim Kardashian, Caitlyn Jenner

E! Entertainment

"The Vanity Fair article was very interesting for me to do because it was the first time I ever really had the opportunity to be absolutely truthful with a reporter about every aspect of my life," Caitlyn said during her on-camera interview, but it was specific comments made during that interview that struck a chord with some of her family members.

"I read the Vanity Fair as well, and I think there are some things that you said that you might not realize are hurtful," North West's mama said.

"You said Kendall and Kylie Jenner were a distraction, and so when they read that, they're gonna think—I don't think they'll quite understand that."

But that wasn't all. "Then it said, ‘Had Kris been accepting to who I am, we still would be together.' And that's the most unfair thing in the world to say," Kim added.

What did Caitlyn have to say to that? Watch the clip to find out!

Watch a brand new I Am Cait this Sunday at 8 p.m., only on E!

PHOTOS: Cait's best pics