The PR queen continued: "I fractured my hip and pelvis when on a horse for a job - the saddle slipped and I fell off. I got back on the horse so as not to bother the rest of the riders and disrupt their ride and then took myself to Emergency where I spent the next two days.
Roxy went on to say that she spent the next six weeks on her back with "daily Clexane injections and physio, orthopedic surgeon appointments" and more.
"So if weak and pathetic is showing up to @sasaust7 because I had committed to it 6 months prior and put 6 days a week training into it no matter what my injuries were well then so be it," she stated.
Roxy then mused: "I think what it shows was, I had a commitment, I showed up and I tried my very best - which given the circumstances was a hell of a lot given my situation.
"I recall saying to my orthopaedic surgeon - 'I may have to fall out of a chopper can you suggest a way to do this with my fractures' his answer was simply 'don’t' - I did what I could but the reality is, my health is my number one priority with two children and a staff of 22 who rely on me - not a show for people’s entertainment and to give them something to troll / gossip about subsequently."
The mother-of-two then remarked that her previous battle with breast cancer gave her some more perspective about looking after her health.
"Having had cancer some three years ago I know that I didn’t need to take the chance of doing myself more harm," she said.
"Anyway I think it simply shameful I had to post this & as I went to include my hospital discharge paperwork I stopped myself and thought - you know what - f*** them this is more than enough! I don’t need to prove anything to anyone I don’t know!"
Her time on the show may have been short, but Roxy impressed the directing staff with her fearlessness.
"I don't actually think I've ever failed," she reflected on the show.
After making the decision to leave, a tearful Roxy admitted she didn't want to give up but that she was in too much pain.
"What a disaster," she confessed on the show.
"I've always had the mindset of take every opportunity that comes your way. But people think that I can't or won't, or wouldn't expect it. And that's been every single thing that I've done...
She added: "But for me, it doesn't matter what everybody else thinks, it doesn't matter if you get to day 12 or day two, the fact that I've actually taken the punt to do it with determination and grit no matter what, that's enough for me."