The mother-of-eight admitted that she had struggled with loneliness following her split and discussed the exact moment that she knew her marriage had ended.
She also chatted about her parents, the wellbeing of her children, tabloid rumours and the lessons that she has learned over the past year.
Family, friends and trust
Kate explained that she is in contact with her parents via email but that they are "not so much" involved in the children's lives. She said that they might be in the future, adding: "There is definitely something missing when you don't have supportive parents nearby and your kids don't have supportive grandparents."
She also revealed that she now had a "very small group of people" in her inner circle of trust and admitted that she had been very hurt when her younger brother Kevin spoke to the media
"To confirm things that he has no idea what he is talking about, things that never happened, to cash in and make money, hurtful doesn't even cover it," she said.
"There's very few people I can trust and I look at them and think, 'Why do you keep coming back because you'll end up in a tabloid and suddenly the world wants to know everything about you'... you lose friends."
Separation from Jon
When asked about the exact moment that she knew their marriage was over, she replied: "I was on a plane coming home and I remember thinking we're not going to recover from this. I don't know what it was. We looked at each other and we were completely different people."
She denied that the split was caused by their show, fame, fortune or her status as a bigger star, saying: "Our goals just very much changed, our visions changed. My goals didn't change as a mum, I just think somewhere along the line maybe his goals changed and they felt possibly detrimental to me and the kids."
However, she insisted that she did not blame Jon and gave him credit for remaining at home with the children while she was travelling to promote her book. "He would always say he didn't feel like he had a purpose," she explained.
She added that it was a "mutual decision" to end the marriage and became emotional as she said: "I still wake up everyday and think the phone will ring and it will be the old Jon."
Kate also revealed that the pair still keep in touch by text, notes and phone conversations because she wants to keep him "in the loop" about the children's lives.
Kate said she had no regrets about doing the show and firmly denied all suggestions that it was harmful to the children.
"Coming from a mum who laid on bed rest from seven weeks pregnant to 30 weeks and fought for every second of their existence, there is nothing that would ever force me to put them in harm's way," she insisted.
She also claimed that there were "many times" that she asked the camera crew to stop filming in order to give the children privacy.
When asked if she wants to retire from the spotlight, she replied: "We're too far gone." However, she added that she is tired of the "constant media following" and "the paparazzi at the end of the driveway".
"I signed up for a reality show, I didn't sign up to be a tabloid staple but that happens. It's one of those negatives that comes with my job," she said.
Kate also described rumours that she had an affair with her bodyguard as "unthinkable", saying: "It makes me sick". She added: "[That Jon] fans it into this huge tabloid nightmare is disgusting to me. [Bodyguard Steve Nield] and his family are probably two of the six people on the planet that I can fully trust."
Addressing the question of why she needed a bodyguard, she replied: "For my safety. People have a lot of contempt and hate for me and at the end of the day, I need to come home safely to my kids."
Jon's relationship with Hailey Glassman
Kate revealed that she met 22-year-old Glassman, the daughter of her cosmetic surgeon, "a few years ago" for "literally two minutes". She added: "It's another one of the things that I am dealing about."
When asked to comment on Glassman's allegations that Jon was emotionally abusive, she replied: "I know that he has a lot of anger... I don't in any way want to disparage him. It doesn't mean I don't feel upset and angry and hurt by a lot of what has taken place, it's just I need to be positive."
"I have learned to focus on the positive, to take what crumbles around me and find one good thing and hold on to it," she said.
"A part of me always will [always love Jon]. It's hard to be married to somebody for ten years and try to say, 'No, I don't love them anymore'. I love the memories we have together, the good times."
She added: "I would love to get to point where he can put his anger aside... my anger isn't aside completely but I feel like I've worked through being able to accept what he has handed me... The anger in me isn't as raw as it once was. I would love to get to a point that we can converse like two adults even if it only had to do with the kids. I am sure we will get there."
Kate: Her Story aired on TLC last night.
All pictures Copyright: TLC