What is the green and red dots in the enclosure with her too? I also think she's having a neuroligical reaction either too much heat or from the Sevin dust.

Why do you wash the snakes? And I certainly would not be offering a mouse with my bare hands to her - if she did decide to strike, she's likely going to hit your hand, not the mouse.

Provent a Mite is used one time a month, and you usually don't need more than one or two treatments to take care of mites. She may also have contracted something brought in from the mites.

Also, most vets will make room for an emergency visit, I would call your local vets and tell them that this is an emergency and cannot wait until Monday.