Entertainment TV Kris Jenner Is 'Not Thrilled' Kendall and Kylie Spent Father's Day with Caitlyn Jenner, Says Source "It's a very complicated situation for the girls," says a source By Melody Chiu Melody Chiu Instagram Twitter Melody Chiu is a Senior Editor for PEOPLE. She has been with the brand since 2009, editing, writing and reporting across all entertainment verticals. She oversees PEOPLE's music and events coverage and has written cover stories on Taylor Swift, Selena Gomez, Melissa McCarthy, Blake Shelton and Sandra Oh. The Los Angeles native graduated from the University of Southern California and has appeared on Extra!, The Talk, Access Hollywood and Good Morning America. People Editorial Guidelines Published on June 25, 2017 12:15 PM Share Tweet Pin Email When Caitlyn Jenner released her memoir earlier this year, tension between the former Olympian and her ex-wife Kris Jenner reached an all-time high. Now, a source tells PEOPLE exclusively that the momager, 61, is “not thrilled” the former couple’s daughters, Kendall, 21, and Kylie, 19, spent Father’s Day with Caitlyn, 67. “It’s a very complicated situation for the girls,” says the source. “Kendall and Kylie just won’t speak with Kris about it. Caitlyn is their dad, but they also don’t want Kris to be upset so they just won’t talk about it.” Overall, the girls have been “great” at handling their parents’ strained relationship, adds the source. Last month, older sister Kim Kardashian West told Andy Cohen her mom and former stepfather stopped speaking after Caitlyn released her memoir The Secrets of My Life, which Kris feels gives an unfair portrayal of their marriage. Earl Gibson III/Getty Images Asked by Cohen if there’s a chance Kris would ever speak to Caitlyn again, Kardashian West quickly said “zero” before adjusting her answer to “two percent.” FROM PEN: Christie Brinkley’s Girls Alexa and Sailor Reveal How They’ve Conquered Bullies and Body Shamers (and still love carbs!) “And those are Kendall and Kylie,” she explained. “That’s their percentage. All fair, I think.” Kevin Mazur/WireImage In her memoir, Caitlyn claims Kris knew about her gender identity before they wed — a point that has been met with contention from both Kris and her daughters.