Can we not say what is needed and not needed for a panic attack, please?
I don't know if the girl in question realised it was a panic attack or not... but I only started having panic attacks a few years ago, and for the first few times, I had no idea what they were. Panic has all kinds of physical effects on your body - chest pains, dizziness, nausea, pins and needles. During my last panic attack, my breathing got so bad that my arms went completely numb and my hands lost all control and curled up into claws. I had no idea what was happening and, in my panicked state, called the ambulance service (well, had a friend call). She talked through what was happening to me on the phone, instructed me into the recovery position, and thankfully we avoided an ambulance actually being sent.
The girl's friends shouldn't have necessarily encouraged an ambulance being called - they should have done all they could to calm the situation. Admittedly, it does sound like a lot of drama over nothing.
But, as someone with a history of (thankfully rare) panic attacks, I would like to remind you that if you haven't suffered with them, don't come up with ignorant comments like 'a paper bag will do'. That may be the case in a logical person's mind, but when someone is mid panic attack, they can genuinely believe that they're dying. It's not in their control, and often need a professional to help calm them down if they're not used to them.
*steps off soapbox*