I’m betting there is a relationship with a male at the root cause for taking away the phone and for the over-reaction by the 15 year old girl.
Teen girls are extremely dangerous when caught up in an unhealthy illicit relationship with a male. They are not sane and they are extremely vengeful. If it’s not murder, it’s suicide ala Romeo and Juliet.
At 15 the only one I wanted to kill was my 13yo brother.........he’ll be 49 this year.
Then I read your reply and calmness reasserted itself. Given the fundamental truth to your claim, I acquiesce that perhaps there is a need for SWAT teams and warrantless access to property.