Kylie Jenner and Khloé Kardashian were less than thrilled about their brother Rob Kardashian’s relationship with Blac Chyna and emails between the sisters stemming back to December 2016 that were recently leaked revealed how against the relationship they were.

“I feel very strongly about canceling Season 2 for Rob&Chyna,” Kylie, 21, wrote in an email to Khloé, 34, and two redacted names, according to court documents obtained by Us Weekly. “The only reason Chyna wants to be with my brother is for this show. She does not love Rob and their relationship is too fake and destructive.”The Kylie Cosmetics CEO continued, “We all know filming isn’t my favorite but I will sacrifice and promise you guys episodes and stories and I’m sure all my sisters will be on board to make up for all the episodes Rob&Chyna were supposed to bring in. The public has been exposed to what a fake relationship they have and it’s embarrassing and makes us all look fake. The show is giving this toxic woman money and exposure she lives and breathes for and by continuing it. She will proceed with using and physically abusing my brother. … Her association is detrimental to our family and Keeping Up W the Kardashians.”

In an email of her own, Khloé wrote, “The sisters are clearly concerned and uncomfortable for our brothers safety and the credibility of the brand at this point due to how they [Rob and Chyna] are both tarnishing it. … We are even considering not moving forward with our show if theirs continues. That’s how strongly we feel this is damaging to our family.”