Then I hope that she is better, make sure she rests well and drinks lots of water. A panic attack is troubling to go through, I can relate to it. Regulate her breathing by breathing in for 4 beats, and exhaling for 4 beats. This will help her heart rate lower a bit. It's also best for her to refrain from interacting with things that can trouble her. Not everythings going to be okay, but I think she can get through this.