Bruce Jenner has been “overwhelmed” by the “love and acceptance” he’s received from Kris Jenner after telling his soon-to-be ex-wife that he is transgender. But, as a new preview clip from Keeping Up With the Kardashians: About Bruce shows, Kris needed time to process what this means for their family.In the teaser video, taped earlier this year, Kim Kardashian, Kendall Jenner and Kylie Jenner discuss Bruce’s upcoming interview with Diane Sawyer. “He’s going to tell his first story,” Kim tells her sisters. “At first I was like, ‘I’m totally going to cry! I’m totally going to cry!’ My throat was literally burning.” Kim clarified that she got emotional just “talking” to Bruce about the interview. “I was thinking, ‘Mom this is really hard for her.’ It’s so sad. She cries all the time and it makes me really sad,” Kim said as she began to cry herself. “We should really appreciate all the things she does for us, because she does a lot.”