"I just feel like I'm really over it with my family enabling Scott because they don't know all of the details," she said in a preview clip from Thursday's series finale.

As Khloe said, "She's saying it's never gonna happen right now until you show me, for one year, you can ...", Kourtney added, "Get your s--- together.".

"But that's never been able to happen," Kourtney continued, before explaining why she's frustrated with her family's blind Scott support.

When asked what she wanted her sisters to do, Kourtney said, "To stop agreeing with him, because that's not true." She added, "I put it back on him and say, 'The things that I've asked of you to do since we've broke up have not been done.' My point was, if he ever says it to you guys, just feel free to say that one thing and end the conversation."