So dd18 went to small party at a friends house at the weekend, everyone had been drinking.
Another girl asked dd to take picture on her phone, she did but dropped phone and screen cracked, dd was accused of throwing phone on purpose!
Small argument ensued and dd decided to leave.
Text from other girl the following day, saying screen was broken, it was dds fault and had to pay £80 repair cost.
Dd text back saying it was an accident and didn't appreciate the accusations and offered to pay half.
Another text insisting she had to pay full amount, even in instalments. dd sent silly pic back(not her brightest idea) but no reply back
Girl then turns up at her work place that evening looking for her, dd wasn't at work though
Today dd receives group message from girl and 6 of her friends threatening to slash her car tyres and smash her teeth in!
Dd refused to engage in messages and isn't even willing to now pay the half she offered let alone negotiate the full amount.
Not sure how to move forward, advice please
Fwiw I told her she should probably pay the full amount, and she did consider offering half this pay day and half next payday as she only works part time as she's only just finished college