Ok, so after freaking out and asking here, calling my mentor, my vet, and a second vet I went ahead and took the little gal out to feed her seperetly from the others, a bottle was a disaster, no matter how many times I poked the nipple the milk just wouldnt flow, so I put milk in a smalll lid instead and held it for her. SHe was ravenously hungry and emptied it three times. My vet called this morning again, and suggested gruel as well, well out of everyone the little one took to it the best, she was rolling around and eating as much as she could, I finally took her away for fear she might eat to much.
So hopefully this was not a case of fading puppy rather the idea she was just being pushed out of the way of the others. I will post the pics soon.
Thanks for your help and support, I was beside myself with worry.