Within a month, Rhianan was arrested by counter-terror detectives and her brief engagement with Prevent had to end. She was questioned, bailed as a terrorism suspect, and was no longer able to attend school.
For some time, she had been talking to older people online, including American Christopher Cook, who promoted a terrorist form of neo-Nazism, and formed a combat cell to carry out attacks.
Evidence shows the then-partner of Rhianan’s mother also had an influence.
The partner, American Dax Mallaburn, had been part of a white supremacist prison gang in the US. He met Rhianan’s mother via a pen pal system for prisoners.
Before Rhianan was arrested, Mallaburn’s relationship with her mother had broken down and he returned to the US. It is understood that Cook and Mallaburn had been in contact, with Cook telling him to teach Rhianan the “right way”
During police interviews, Rhianan described being coerced and groomed, including sexually, and having sent explicit images of herself to Cook. The abuse she described would eventually result in a formal government finding of exploitation.
Under modern slavery laws, certain public bodies like the police are required to notify the Home Office about any potential victims of exploitation they encounter.
However, in the months before Rhianan was charged, none of the organisations involved referred her to the specialist Home Office unit that considers such cases.
This was not due to a lack of information.
Around the time of Rhianan’s arrest, MI5 received evidence showing she had been exploited – including sexually – by Cook.
An FBI investigation had uncovered messages and images from Cook’s devices showing Rhianan being groomed, coerced and exploited. The FBI handed the material to MI5.