Well we're still none the wiser about why she is shaking. However her temperature is high, no signs of pain anyway (which I already knew) so she's been given antibiotics for a week incase she has an infection.
If she is still shaking after the week then it will be full blood tests to see what they bring up. Hopefully the antiobiotics will work as they don't really know at this stage.
Thanks for your wishes, fingers crossed the tremors stop.