Justine McNally duped the 16-year-old into believing that she was a male as they dated online and carried on tricking her after they met, the Sun reported.
According to prosecutor David Markham, McNally and her victim started their relationship when aged 12 and 13 after meeting through an online videogame and did spoke about what they wanted to do to each other.
McNally, from Glasgow, lured the London schoolgirl into three sex sessions, promising they would get married and have children and fooled the girl into thinking that she had lost her virginity to her in a darkened bedroom of a family friend’s house.
McNally’s secret was exposed when the girl’s mother found a strap-on penis in her backpack and told the daughter that Scott is actually a girl.
The mother and daughter then confronted McNally, who produced a picture on Facebook of her dressed in pink clothing and heels, and said she wanted to have a sex change to continue the relationship.
Markham added that victim was “literally sickened” by the revelations, and eventually ended the relationship and called police.
McNally was sentenced at Wood Green Crown Court after admitting six counts of sexual assault by penetration.