The 46-year-old singer and billionaire businessman James Packer recently called off their wedding but Mariah's upcoming E! reality TV series, which was filmed months ago, still features scenes where she is busy preparing for their wedding and she admitted it is tough to see.
Mariah told Entertainment Tonight: "All of those moments are bittersweet, but you just have to focus on whatever you're focusing on and keep it moving.
"The stories [in 'Mariah's World'] are interesting because it shows the side of the entertainment world that's not just the celebrity [aspect]. It's real [and] I don't feel like it feels like a scripted kind of reality [show] whatsoever."
It was recently claimed the 'Without You' singer - who has five-year-old twins Moroccan and Monroe with ex-husband Nick Cannon - is "ready to move on" from James and feels relieved they never made it down the aisle.
A source said: "She's ready to move on. She feels like she dodged a bullet ... The negotiations aren't going well. At the best, she'll keep the ring."
The pair reportedly split after having an argument when they were in Greece.
A source said: "It started in Greece [with] some sort of outburst [from James] which everyone heard. [He told her,] I don't know if I can do this. I can barely take care of my own children."
And the couple failed to attend a planned meet up in Los Angeles back in October to "talk through everything as adults".
An insider claimed: "Mariah and James never met up after that. And they haven't spoken. The way the split news was handled was incredibly upsetting to her."