The 60-year-old reality star opened up about her 66-year-old ex-spouse on Tuesday's episode of The Ellen DeGeneres Show after Caitlyn revealed she will likely date men in an I Am Cait promo in January.
"[It's] confusing," Kris admitted. "[But] I really want her to be happy and be really comfortable in all the things she says she wasn't -- her true authentic self -- for most of her life and knew when she was four that she had felt like that."
"You don't want somebody to be miserable or in pain," she said. "I think for me, just getting used to all of that, I'm human. I have my feelings, but I try. It's like the mourning of somebody that you feel like you're never going to really see or be with again."
Caitlyn revealed she is transgender in April after months of speculation about her changing appearance. The thrice-married star initially said she wasn't sure if she'd date women or men after her transition, but expressed interest in men in the promo.
"To be honest, I don't see [myself] dating women in the future," she told friend and transgender activist Chandi Moore. "I've been there, done that, got three ex-wives."
Kris and Caitlyn were married 22 years before separating in 2013 and share two daughters, Kendall Jenner and Kylie Jenner. Kris also addressed son-in-law Kanye West's Twitter rants on Tuesday's episode, claiming "people get it misconstrued."