Justine tells how her public shaming left her jobless and affected her health and wellbeing.
She said: 'I cried out my body weight in the first 24 hours. It was incredibly traumatic. You don't sleep. You wake up in the middle of the night forgetting where you are.'
While she regrets sending her tweet, she's also resentful of the way its interpretation led to her downfall - and how people she didn't even know seemed to take pleasure in her misfortune.
'I had a great career, and I loved my job, and it was taken away from me,and there was a lot of glory in that. Everybody else was very happy about that,' she said.
She added that it has also ruined her love life: 'I'm single; so it's not like I can date, because we Google everyone we might date. That's been taken away from me too.'
Justine told Jon that she realised she 'couldn't sit at home and watch movies every day and cry and feel sorry for myself' forever and she needed to 'make steps to reclaim my identity and remind myself of who I am'.
As a result, she now has a new job and is wary of what she shares on social media. She told Jon other than contributing to his book, she won't be speaking out about her story again.
'Anything that puts the spotlight on me is a negative,' she told him.
It seems like she learned her lesson. If you're held on that high of a pedestal, you need to watch what you say. I think that goes for everyone really, though.
She added that it has also ruined her love life: 'I'm single; so it's not like I can date, because we Google everyone we might date. That's been taken away from me too.'
I didn't even think this was a thing
If she could knew what Google was though, you'd think she wouldn't be tweeting such idiotic things
That's why I don't have a personal Twitter or Facebook account (anymore), potentially to damaging. She lost her job with a stupid joke I could lose clients just stating my political views.
It was a damn mess 
