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That is a very bad sign that her tongue is white and you need to get her to a vet ASAP. She may be hemmoraging in her stomach and it also may be something call a gastric torsion which means the stomach flips and looses circulation. I stress that it is very serious and need to be seen by a vet immediately!
This is not a good sign, it means that her blood pressure is very low. Keep her warm, try to hydrate her, for example with Gatorade using a small syringe without the needle, or a small spoon, giving very small amounts every so often, and get her to the vet ASAP!!!!!
I wish you the best,