kim hill was abused by her step-father from a young age .
he forced her to wear lingerie and watch ` sick porn ' films aged nine .
kim never revealed what had happened until she met her husband rob .
with his encouragement kim reported her abuser and saw him sentenced .
derek osborne was jailed for 21 years in 2013 aged 72 .
he confessed to abusing other girls as well as raping another woman .
kim has now set up a blog to help other victims of sexual assault .