Leanne Gilder, 26, befriended the 14-year-old then dolled her up in make-up before pimping her out to a builder for £60.
Gilder, from Oldham, has now been jailed for five years after she was found guilty of controlling child prostitution.
Gilder said she believed the victim was 18, and that they had been working together as prostitutes after meeting at a drop-in centre.
But the jury rejected Gilder's account after the youngster testified that 'Leanne pimped me out because she got money over me getting raped'.
The court heard that Gilder had got the teenager high on drugs then plastered her with make-up before taking her down to Manchester's red light district.
Kerb-crawler Michael Booth picked up the pair behind Piccadilly Station, paying Gilder £60 before molesting the 14-year-old in the back of his Transit van.
Gilder then treated the victim to a pizza before they got a cab back to Oldham.
The following day, Booth met up with the pair again after ringing Gilder and asking if the child was 'doing business'.
The youngster refused and was later returned to her home in Manchester by police.
Gilder, who has two young children, protested her innocence to child prostitution charges in a Manchester Crown Court trial.
Sentencing Gilder, the judge said: "The fact of the matter is that she looked her age. She is a particularly young looking girl and you had every opportunity to study her, because before you took her into town you applied make-up on her. You regarded her something that could be sold for money."
Michael Booth, 44 of Padiham, Lancashire, was jailed last month for six years, with an extended four-year licence period, after being found guilty of child sex offences.