(LEFT) Kourtney Kardashian and Khloé Kardashian  05/16/2016 AT 03:45 PM EDT  to their group texts – for her own sake.  After having problems within the family, both girls want to spare their mother from getting involved with their sibling drama.  "Now when we have our group texts where we curse each other out, we leave her off of it," Khloé said of Jenner, 60, to  . "So, we've learned our lesson."  "We curse amongst ourselves," added big sister Kourtney, 37.  "We leave her out of it so she doesn't feel like she has to choose," added Khloé. "We've evolved."  That said, Jenner remains at the end of the receiving line for her 20-year-old daughter,  . On Monday, the model took to her  to share with fans that her mother is a big part of her support system.  "When things get really bad, and I'm really down, I call my mom," her message began. "She listens to me – which is so important – and gives really good advice. I feel lucky to have such a strong support system when things get rough and feel overwhelming."  As for the recent family drama between the siblings,  made a big splash on Sunday night's episode of  him moving into his new house. Though some of the sisters were there to welcome him home, Khloé, 31, was absent from the house.  "The last few seasons were really emotional and hard because we went through some hard stuff," Khloé also told E! "It's natural for people to have ups and downs in life, and we give full access to ours. We're now finally in a good place all of us. The kids. The family. We're all back together."  Though Sunday's episode ended with Khloé giving up on trying to communicate with her brother, the pair have since  . Last month, Kardashian shared a heartwarming Snapchat photo of her and Rob, 29,  airs Sundays (9 p.m. ET) on E!
Though Khloé and Rob Kardashian have mended their relationship, she refuses to involve her mom in any more sibling drama