May be that being in a different place of all a sudden is a "Tigger" for her. I know a few that have that and it is when they travel far from home only. Not being in your normal daily surroundings can cause anxiety. Not knowing where you are or if you are going to get back home alright etc. Maybe this is just an isolated situation. Let's hope so.
I take it from you post you are on holiday or something yes? If this is the case then my theory could be the cause.

Carrie

we were on school trip, the thing that triggered it was the walls in the dome tilting. Which was confusing and even made me feel a bit sick.

Click this, and imagine the walls at an angle.

http://www.wilhelm-aerospace.org/Architect ure/rome/vatican/inside-dome.jpg

But i have realised something. i think she had coke at the restauraunt. It contains caffeine, which is a stimulant, which speeds up the body? I've heard that caffeine can confuse the body because of the faster blood flow, which is one of the symptons of a panic attack?

(learnt this in one science lesson and heard about panic attack thing on other site, some things may be wrong)

Maybe the coke triggered the second one , especially as it was close to the attack.

Now we are back in england, she might of had another drink that contained caffeine last night, which triggered the third attack.

Is that possible?

Yeah. After the first attack, what starts to happen is that the physical symptoms of an attack becomes the trigger (like the rush from caffeine for example, or breating hard from exercizing, etc) because the panic attack was so terrifying. If she keeps getting these, she probably has panic disorder and should see a doctor.

CBT (cognitive behavioral therapy) is really effective treating panic disorder. The doc will help her not to have attacks when stuff like that happens.

tis ok, they have stopped now anyways.

good, I hope it stays that way. Make sure you help out your friend if it happens again though so she can get treated. They are fairly easily treatable so it's worth the trouble.