I rang the vet and they told me to bring her right up.
She had went into a diabetic hypo and, as a result, had hypothermia too.
They've given her glucose and insulin put her on an IV drip, and are using heat pads, etc to bring her temperature back up.
She'd had her insulin as normal so further tests will have to take place to determine what's going on with her diabetes.
There's a chance she may not make it to morning but if she does I've to go in at 8.30 am and see how they're planning to proceed.
I really can't believe how quickly this happened as this morning/afternoon she was fine
