Skype chats also reveal Watkins suggesting to the woman that they have a baby together so he could abuse the baby whilst the 10-year-old watched.
Last month the 36-year-old pleaded guilty of a host of abuse charges including the attempted rape of a baby.
Watkins suggesting to the woman that they have a baby together so he could abuse the baby
Speaking about the revelelations, the woman who cannot be named but is in her thirties, said:
‘He mentioned my daughter - she would have been 10 - and that's when I was like 'Oh my God, you need help and we can't talk ever again. You've really crossed the line now by talking about my daughter.
'I was talking to him on Skype. He wanted me to go and get her from the other room - he was masturbating - so she could see how hot he was and so that she could tell me how much she wanted him.
Admitting that at one point Watkins mentioned that he and the fan’s then 7-year-old daughter would make a ‘good-looking’ couple, she added:
'In 2010 he mentioned that he wanted to have a baby because he wanted to raise it to be evil like me and him - apparently, I'm evil now too,' she said. 'A year later he said he wanted us to have a baby so he could have his way with the baby and my daughter could watch how it's done.'
In a message sent in 2011, the woman asked him to DJ at her daughter's birthday party.
Watkins replied: 'Only if I can f*** her.'
Another message sent by Watkins read: 'The more drugs I do the filthier I am and the younger I get - it's a curse.'
Following Watkins’s arrest in December 2012, the woman contacted South Wales Police and passed on records of her conversations with the star.
'I was so relieved when he was arrested. I thought: 'Finally,'' she said. 'I thought he was going to get caught one day.
Watkins's admission in court that he was a child abuser was 'not a surprise at all,' the woman added. 'He is a very sick person, controlling and manipulative.
'I still can't get over those women not protecting their babies when they knew what he was capable of. That is the most shocking.'