Kiro laid on his bed, buck naked and blissfully unaware of the events that were taking place in his dorm room. Ursa and Isaac's plan was to get him expelled or even better imprisoned. Underage drinking was no joke, sexual assault was even a much bigger deal.
The drug she used wouldn't be detectable even with the technology as it was. She had gotten it at a dark market, the price was steep but she wasn't the one paying. Even if there wasn't proof, authorities always sided with the one that had a higher societal status.
If she was caught, she had Isaac Blakeson as a backer, so she didn't care much about getting caught.
Kiro was sound asleep, he had no idea of the predicament he was in. If this succeeded, his life was over.
The girl was a cunning one, she'd throw anyone under the bus if it meant marrying Isaac one day.