loads of people here massively lack reading comprehension.
the virginity thing, if you think about it for 10 seconds, is about if she's been raped, had to turn to prostitution as a minor, or has been spreading her legs for random men just for a place to stay.
if she'd lost her virginity, then she'd have lost her innocence.
the sister is a dumbass too. the absolute moron is choosing to stick with her university and daddy's bank account, rather than go for the most useful resource in finding her sister. if she wanted to really deal a hit to her father, she'd report to the police and the media that he kept silent when his underage daughter has been missing for half a year. destroy his reputation and find your sister, or keep living off his money while god knows what is happening to the girl.