Help my friend anxiety attack 17F 🙂

r/

I have a friend I met at camp (we are teens of 17 years old). Sadly , she often has panic attacks when she’s alone, because she has some mental health issues caused by traumas. The problem is that we’re 1,000 km apart, and my only way to help her is by calling or texting.
Helping to relieve an attack has never happened to me in real life, so with this distance, I have no idea.
She told me that hugging helps her a little, but I don’t see what I can do if she calls me in a panic…
If you have any ideas, don’t hesitate!
Thanks for her 👍

TL;DR; : My friend has anxiety attack, but i’m too far away from her, how can I help ?.