Then, there is her youthful get-up of a lacy top, snug jeans and gold sandals. Missing are the tattoos, and multiple piercings one usually associates with someone like her - a girl gangster.
But in the past two years, June (not her real name) has peddled drugs, been arrested for rioting and beaten up more kids than she can remember.
'I felt powerful. You don't need tactics or skills to fight. You just have to know how to chiong (Hokkien slang for going all out),' said the pint-size teen in a mix of English and Mandarin.
Bored and looking for friendship, she started hanging out with older students - some of whom were in gangs - at her co-ed secondary school when she was 13.
It felt good to have 'big brothers', since she was an only child of working-class parents. 'I wasn't afraid of anything. If I ran into trouble, I'd call them. Sometimes, they'll watch me fight someone, but if I kena beaten, they'll step in.'
They taught her to smoke, cut classes and hang out at their 'own place' - turf guarded by the gang as their own and where rival gangs did not dare tread.
Sometimes, she hung out in Geylang with pimps supposedly from the same gang. She also sold synthetic drugs like ketamine, Ecstasy and Erimin-5, but more sensible friends talked her out of it.
The rebellious teen refused to listen to her parents, who scolded her for keeping bad company. 'We quarrelled every day,' she said. 'I thought, all my friends are good, why are you telling me they're bad?'
Her gangster stint ended when a fight with a female schoolmate landed the latter in hospital and the police at her door.
Unrepentant, she breached home probation and sneaked out to a friend's chalet party where she got into a tussle with a girl whom she claimed spat on her.
For that, she has spent the last 10 months at the Andrew and Grace Home, for troubled teens. Even there, she refused to participate in activities and added medicated oil to her new roommate's shampoo, causing her to break out in rashes. But when the home's director, Pastor Andrew Choo, did not punish her, June said she realised her own wilful folly.
'I realised how stupid I was to have wasted my time and given up my studies like this,' she said quietly.
She has since made up with her parents and wants to return to school when she is free to leave the home in two months.
Asked what she wants to be in future, she does not hesitate. 'A businesswoman,' she says, breaking into a wide grin.
Tan Dawn Wei