The FAI into Katie’s death heard she was vulnerable and had a history of self-harming which Polmont prison staff were not aware of.
It also heard she struggled in prison and was being taunted and threatened by other prisoners before her death.
Her mother Linda told the inquiry at Falkirk Sheriff Court her daughter had been left traumatised by the abuse.
She said someone had shouted at her to “go and hang yourself Katie and give us all peace”.
Her brother Scott was 15 at the time, but he says that even as a young teenager he could see the flaws in the prison system which led his sister to become “too scared to keep living”.
Scott said the prison environment was slowly killing Katie and the authorities “abandoned” her to get on with it.
“They blatantly murdered her,” he told Scotland News.
“They tortured her. They defiled her. They destroyed someone and then, when all was said and done, let her have the mercy of death.
“They didn’t just kill her, they destroyed her.”
