Hi .... and welcome to the forums ....
(Hi @NikNik)
I wasn't conscious of the existence of panic attacks until I experienced a couple of them in different forms .... although "stage fright" I encountered in a ballet concert as a young girl may have come under that banner as well, causing me to forget all my steps in the moment ....
My husband is in denial with an undiagnosed eating disorder. Didn't know much about those either before this very steep learning curve ..... and while I didn't understand what was happening with him and how he could change personality, and seem to lose control over his former values, lashing out at us in his fear and frustration .... it got to a point where I was failing to cope with the intensity of it. Panic attacks arrived on my doorstep.
My first panic attack was in the form of feeling that I couldn't take in enough oxygen with my breathing .... a sensation of inadequate air intake, even though the mechanics of my breathing were normal .... this lasted a couple of weeks, on and off. It was only when the second one hit, as an adrenaline rush that sent my heart hammering and my blood pressure climbing, with dizziness, angina (chest pain) and what have you that it clicked .... in an ambulance I had called, and on my way to hospital ....
I had thought it was heart trouble.
After organising cardiac testing to rule that out, I took stock of my situation. I don't know whether these things can help with your daughter, but I haven't encountered another one, and I think it is because the ones that I did have clued me in to this -
High stress circumstances arriving in waves, and building on each other are likely to lead to a panic attack .... so when that is starting to happen is the time to take action.
Action to be taken is -
"Time out" .... removing myself from the source of stress as much as possible, which might mean jumping into the car and driving away for a while .... or going for a shower and staying in the bathroom for ages, or heading out for a walk ..... physically getting out of the line of fire.
Being pro-active .... I began to schedule semi-regular foot massages for myself, and take time to see to broken nails and getting my hair trimmed .... self-care that places a priority on my well-being.
If I feel my heart starting to hammer, or I begin to feel flushed in the face, indicating that my blood pressure is being affected, I will physically remove myself but also bung in some earphones and put on some gentle piano music. I can now turn on that music and it has an automatic calming effect on me. There have been days where I have lived with my earphones in and that piano music on a constant repeat .... those were the worst days .... I haven't had any like that for a while now.
In the future if I do find find a panic attack escalating, I would follow through with grounding exercises that others on the forums here have taught me .... like locating the colours of the rainbow in objects in the room around me, or holding a piece of ice in my hand until it melts .... the cold sensation engages the senses .... perhaps cooking a piece of toast would do the same thing via the sense of smell ....
Since my encounter with them, my daughter has told me of experiencing panic attacks ... in relation to our home situation, but also previous bullying incidents at school, and the stress of her schooling around illness and injuries she suffered. It has made me more conscious of her state of mind, but the school counsellor had provided her with the same sort of strategies I now use, and we support each other in dealing with our daily events.
My son no. 2 - still living at home - plugs in earphones, or puts himself to sleep, when the going gets tough.
I agree with the suggestions @Janna has outlined below, but I would really suggest sitting down with your daughter in a quiet moment and devising an action plan .... probably more like a menu of actions to take, and reach for one or more strategies in the moment of a panic attack based on the head-knowledge and discussions about what to do that have happened when things were calm.
For our family, just the awareness of what panic attacks are, what is likely to bring them on, and having a set of management strategies really helps.
Take care -
F&H