UPDATE:

Well Henny has spent the night. They did blood work and all her organ function tests came back within norms. Her hematocrit and RBCs were a little off but that was due to dehydration. Thankfully all her electrolytes were within norms as were her WBCs. At the moment both myself and the vet are stumped as to what's caused all this.

She stayed over and is receiving fluids and antibiotics (still vomiting a little) so their giving her compazine to counteract that. I'll call in a little bit to get an update.

I really need some sleep I've been up (with the exception of 1.5hrs) since 5am on the 13th. Gotta love working 12hr midnight shifts.

I'll keep everyone updated. Thanks for all the thoughts.