(All names have been changed)
Single mum-of-two Sarah has been living every mother's nightmare since she found out her 'perfect' fiance was abusing her daughter Anna.
Sarah had fallen for a senior colleague, Peter, at work four years earlier and at the time thought she'd found the man of her dreams.
'I was vulnerable,' she admits. 'I was financially insecure, my ex-husband lived overseas, and I was bringing up my son and daughter from that marriage on my own. Then I met Peter and he offered me the world. He had a good job, he loved me and he was wonderful with the kids, particularly Anna. She even called him Daddy,' Sarah explains.
'We bought a nice house together, and he promised to give the children a good education, which I never could have afforded. I thought he would be the perfect husband and father.'
One night, when Anna was seven, Sarah walked past Anna's room and saw Peter sitting on her bed.
'In that moment, I Just got a feeling I can't describe, but I suppose it was a mother's instinct that something wasn't right,'Sarah says.
The next morning, without even knowing why, Sarah went into Anna's room and said: 'If anyone ever tried to touch you or hurt you in a way that wasn't right, would you tell me?'
'She looked at me in a funny way, shut the door and said: "What about Dad?" and started to cry.
Sarah was devastated Although she loved Peter, she and the kids left the house that same day and moved in with Sarah's parents.
This was the man I thought was my rock, but there was no way I could forgive him for hurting Anna and betraying us like that. I get so angry when I hear of women who stay with child abusers thinking they will change, You can't take that risk. Your children must always come first,' she says.
Over the next few months, Sarah was by Anna's side as she talked to the police, gave video evidence, talked to counsellors, and endured a soul-destroying internal medical examination to gain physical evidence of the abuse.
'I can't describe how awful it was to watch my seven-year-old daughter go through all that,' Sarah recalls.
'She was so depressed and confused she said she wanted to die. She was on suicide watch at the hospital at one stage. She felt guilty about everything, even telling me, because she felt if she'd kept the secret, our family would still be together.
It took her 14 months of counselling and love from her family and friends to accept that it wasn't her fault.
'I felt guilty that I'd brought Peter into her life and exposed her to that. My whole world was spinning and I felt like we'd lost everything,' Sarah concedes.
Peter was charged with two counts of sexual assault of a minor, and two counts of digital rape. Although he initially denied the charges, faced with Anna's strong video evidence, he eventually admitted the abuse and pleaded guilty. He will be sentenced in the near future.
Though Anna's counsellors believe the brave nine-year-old is yet to tell all about the extent of the abuse, Sarah is proud the little girl was able to confide in her so that she could put a stop to it.
'If she hadn't told me, I'd probably have married him and the abuse would have been much worse,' says Sarah.
'All I can say to other mothers is don't wait for your kids to tell you they're being abused, you have to talk to them about it and ask them. You might get an answer you don't want, but at least you can do something about it'.
Sarah has followed the news of Operation Auxin with relief and horror. I'm relieved there is finally something being done, but I think it's just the tip of the iceberg,' she adds.
'I watch the news and I cry: because it brings it all back. The police have told me that what Peter did to us is pretty common with paedophiles. They pick a vulnerable mother to groom them to get to the kids. Anna is pretty and blonde, with big blue eyes and as cute as a button, and she really wanted a daddy. We played right into his hands,' she says.
'Neither of us will probably ever trust a man again, but if telling our story stops this from happening to even one more family, it will mean what happened to Anna has at least helped keep another child safe,' Sarah states.