AT 9pm, Reginald Allen would visit his granddaughter in bed and sexually abuse her. Now she gets flashbacks every night that he will come back.
Tasha said she did not know any different and thought the abuse, which she suffered from the age of 9 to 14, was normal.
But, when she realised what he had done, she tried to take her own life.
Now Tasha, who has waived her right to anonymity, said life is starting to improve with the help of counselling and her four-year-old son, Tyler-James, whom she said had saved her life.
The 22-year-old, of Derby city centre, said: "When I was nine I did not have a clue but he used to say I came on to him. I tried to touch other men as a child because of it.
"It has made me so angry. He started abusing me when I was alone in my bedroom when I was nine after he got residency of me. It would happen at 9pm and I was in bed. What my grandad has done to me is vile and sick."
Allen, of Manor Road, Ashbourne, admitted in court indecent assault, indecency with a child, sexual activity with a child and causing a child to engage in sexual activity.
Even after he was jailed for four years, Tasha said she feels his presence. She said: "At 9pm now I have to stay up and watch TV because I can't be in bed or else I will get flashbacks.
"I have nightmares that the abuse is still happening and I can see him doing it to me.
"I fear he will come back."
Tasha said she was bullied at school and would return home to the abuse.
She said: "When I did come home I'd have my tea and then I'd go to bed.
"Then he would abuse me. It happened every night.
"When I was off, it became frequent in the day. He got an adrenalin rush from taking the risks and there were times he was nearly caught when we were upstairs.
"He called it "our little secret" and called me his "special little girl".
"I enjoyed the attention at the time but looking back and it's absolutely disgusting.
"The man is vile and sick.
"He even threatened to put me in care if I told anybody."
Tasha recalls the moment aged 13 that the abuse was psychologically damaging her to the point where she tried to commit suicide by taking an overdose.
She said: "Not a day goes by when I do not think about what he did to me.
"Even now, though, I do feel guilt and I know it's no fault of my own. I have so much anger towards him."
Tasha confronted Allen about the abuse when she realised what he had done was wrong by watching a sex education video at school.
Tasha said Allen stopped abusing her as frequently when she started to get older and reached puberty.
She said: "When I realised what he'd done I threatened that I'd tell people.
"The video was made up and was about somebody being abused. It was then that I realised what had happened.
"He said I was a "little monkey" and was joking.''
Tasha lived with Allen for the next few years where he did not abuse her.
She said: "I tried to live a normal a life as possible.
"But it was very weird and I was scarred.
"He used to give me money and fags to keep me sweet."
Tasha said getting anybody to believe what she had been through was one of her toughest challenges. A friend whom she had told revealed the news after an argument when she was 17.
It was a revelation that would send shock waves through her life and ultimately made her homeless.
She said: "I lost all of my family because they did not believe me. When they asked me if what my friend had said was true I said 'you will find out'. I was kicked out and had to live in a refuge when I then found out I was pregnant.
"When I found out I was numb."
The road to justice started in 2009 when she phoned the police and told them what Allen had done. He denied sexual contact and no charges were brought.
But in 2011, he told his wife what he had done and the case was reopened. He admitted abuse when questioned. Tasha said in August 2013 he admitted it to more family members and went to hand himself in.
Tasha contacted police and gave them more evidence. She said she had not been looking forward to facing him in court but Allen pleaded guilty.
She said she derives no pleasure from the sentence he was given. She said: "I don't see the sentence as justice. He will be out in two years and even harassment carries a maximum sentence of 10 years."
During Allen's sentencing at Derby Crown Court in March, Judge Jonathan Gosling said: "You ensured her silence by telling her that she was your 'special girl' and she shouldn't disclose what you were doing to her or you would get into trouble.
"When she was 14 she developed the courage to tell you to stop.'' Realising, no doubt, there was a risk at that stage she might expose you, you did stop."
Allen must sign the sex offenders' register for life.
Despite the flashbacks, Tasha said she does feel better about life now and said her son plays a big part. At her home photos of Tyler-James, who has Down's syndrome, fill the wall.
Her recovery also includes having counselling sessions.
Tasha said: "The sessions have been the first time in my life where I've been taught to have self-respect for myself.
"I really think my life would have ended years ago.
"Tyler-James has been a big help. He's very happy and cheery and loving."
She is studying performing arts at college and hopes to do a degree that will lead a career.
Tasha has a clear message for other victims: "You have to stay strong and speak up. It might take a while but somebody will listen. The abuser will try to emotionally blackmail you but you need to try to get through it."
