Roz (48) says she has no regrets about telling her story and hopes it will inspire other victims to seek help.
"For me, it's important to show that such experiences of abuse need not define you or limit your future.
"By talking openly about my abuse, I hope I can give hope to sufferers that they can recover and go on to lead a full and happy life."
Roz thanked loved ones for their continued support.
"The support and love of my family, especially my husband, has helped me get through what happened.
"Life does go on and I'm all good."
Roz said she had no shame in admitting what had happened.
"I'm not ashamed and it's not my fault. There's nothing you can do about it other than be strong and get out there."
In the new series of the Dublin-based reality TV series, Roz reveals the news to friend Virginia Macari while organising a charity event for sexual abuse charity CARI in the Shelbourne Hotel.
"It's a really big thing for me because I was abused as a child," the Malahide mum said.
"It's obviously not something I talk about a lot, but now there's this CARI lunch."
"This is why I want to put it out there, and get as many people as possible.
"I told Virginia because I had to put it out there -- that it's nothing to be ashamed of."
Roz was accompanied to the lunch by her fellow Housewives stars, including Virginia, who described her shock and horror at hearing about the abuse.
"It was very upsetting but I think she's really brave and courageous for coming forward and telling her story.
"I think by doing this she's going to inspire many people to help them," added Virginia, who described Roz as an "amazing woman".
The TV3 show will be broadcast next week.