Ok but real talk... I seriously doubt 10+ girls have been on their period, string hanging, and accepted a pvt without mentioning it while also 1. Putting a minimum time for pvts and 2. Feigning ignorance on how to terminate.
I put in my room title either Red Week or BJ Appreciation Week and if they want to go Pvt, I make sure they KNOW I won't do much below the waist.
My guess is OP came across ONE model who did this and threw a fit about it here as if it happens alllll the time. If 9 out of 10 models don't know how to terminate a pvt, I have to wonder why on earth you've had to ask 10 models to terminate. Certainly not for a tampon string. You sound like an absolute nightmare.