"When I arrived, there were two men and when I tried to open the door of the villa, I couldn't," she told the court.
"After I managed to get it opened, I was pushed inside then came a lot of policemen. They showed me police identity."
Asked by a judge what she thought then, Ormsby said: "Oh God, this is trouble".
Psychiatrist Ni Nyoman Hanati told the court Ormsby was a person "who had never felt happy". Ormsby was one of 13 children and given up for adoption at age six to a family that frequently left her alone, she said.
She had been admitted to a clinic for depression, and had a heroin overdose six years ago.
Hashish and MDMA were seized from the villa where Ormsby was arrested but no one has ever been charged in connection to those drugs.
The court will hear sentencing submissions next week. Ormsby remains in custody in Kerobokan jail.