A young woman has been locked up for orchestrating a "revenge rape" on a teenager after telling her: "Snitches get stitches".
Aliyah Weekes, 19, instigated a sex attack carried out by her younger brother in an alleyway on the 15-year-old victim, who she accused of spreading rumours.
She was sentenced to four-and-a-half years' detention in a young offenders institute today for her role in what a judge called a "truly wicked" crime.
Her brother Lacquan Weekes, 18, was detained for five years at the Old Bailey after he was found guilty of rape following a trial.
Aliyah Weekes and a 16-year-old girl were convicted of aiding and abetting the attack. The youngest defendant was today spared a custodial sentence and given a youth rehabilitation order lasting 18 months.
Sentencing the three, Judge Jeremy Donne said: "This was no game. This was no childish folly.
"This was a wicked crime and one that Aliyah Weekes, you determined upon over the space of about an hour during which the victim was detained."
The victim was corralled into an alleyway where she was forced to have oral sex with Lacquan Weekes on the evening of April 29 while a group of youths watched nearby after being confronted by the two girls in a park in Willesden, north-west London.
Judge Donne said: "This was a revenge rape and this poor girl was being punished. She was accused of spreading stories. Her explanations were rejected.
"She was very distressed throughout this. She must have been terrified. To compound her fear was the added humiliation that all of this was happening before a group of other youths who were nearby.
"This was a truly wicked offence."
He said he held Aliyah Weekes "principally responsible" for the incident, saying it would not have happened without her involvement.
She had told her "snitches get stitches" when she accused the victim of telling secrets about her and the 16-year-old.
She also threatened to make the victim "do a line-up" - street slang for giving oral sex to multiple men - and warned her she would be hurt if she did not comply.
Referring to the "stitches for snitches" comment to the victim before she was attacked, the judge said this made it clear that "what was motivating you was revenge".
In an impact statement, the girl's mother said she had changed from a "bubbly and carefree" girl to being "jumpy and withdrawn" with a "lack of confidence and trust in people".
She suffers from asthma and eczema and her health has deteriorated following the attack, while she also failed to achieve her potential in her GCSEs.
The family had also been targeted in "acts of intimidation" including having a brick thrown through their window, the court heard.
Lacquan Weekes, of north-west London, smiled and chatted to his sister in the dock as the court heard a probation officer determined that he poses a "high risk" to the public.
The judge said Lacquan Weekes, who has previous convictions for battery and possession of drugs, had shown "not one iota of remorse" for the crime and said his behaviour while on remand had been "appalling".
Paul Stanislas, for Aliyah Weekes, also from north-west London, said she had played "no more" than an "instigator role" in the attack.
Michael Chambers, for her brother, said he had a "very troubled background".
Clare Gordon, representing the youngest defendant, said she neither "perpetrated nor instigated" the incident.