thanks a lot for your answers!
The storm has abated now, so she had a good night sleep and got all affectionate and cuddly again, she slept next to me uner the duvet
One of the problems was that she was so nervous it was impossible to pet her or cuddle her or comfrt her in anyway, she couldn't stay in oneplace, she would just run away and generally lurk around meowing.
I was nerver worried that she was ill, because it quite clearly coincidented with when the storm was raging, the rest of the time she was normal (though a bit moody).
I really hope the weather gets better, poor wee darling!
Déborah