Kourtney Kardashian is on a mission...

It all started on the latest episode of The Kardashians when she finally sat down with Khloe's ex-boyfriend, Tristan Thompson, as he embarked on his apology tour.

As Tristan took accountability for his actions and repeated infidelities, Kourtney pointed out how fortunate he is to be part of their family - regardless of his past mistakes.

"In this family, you guys are so lucky - all the guys - because for whatever reason, it's held a higher priority of, 'Let's keep everyone happy and getting along, and let's make sure Tristan is at Christmas Eve and everyone's there, and it's one big happy family and let's make sure everything's fun and happy,'" she said.

"For some reason, that takes a priority in this family over setting a boundary or having someone's back or having someone's side."

Though she made a point of calling out her sisters, the 44-year-old admitted she was guilty of trying to keep the peace instead of holding people accountable for their actions.

"I've been a part of this whole thing, but it's interesting to me when I think about it in a superficial way," she continued.

"We can make sure Khloe looks her best ... but really making sure that the person feels supported, stood up for, sets the boundaries they need to set and is supported in that," she added.

"And in this family, it's not [supported]. It's lucky for you guys and it is great for the kids, but then it's also like..." the reality star trailed off.

It seemed the eldest Kardashian got through to Tristan as he said he was trying to become a better person.

"I’m not proud of the person I used to be. Am I proud of the person I'm becoming? Of course, but in order for that to happen, I had to fall, hit rock bottom, lose everything in life and really be like, 'Yo, you gotta pick your s*** up,'" he said. "I needed to grow so I can be better for my kids."

Though he made a great deal of being on a journey of self-improvement, Kourtney isn't fully convinced saying in a confessional that his words didn't match his actions. Ouch.

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