I am so sorry that you are going through this ordeal, Amber. For those who don't know, I also got a puppy from this breeder, and thankfully he's fine. I will have the vet check the poop again when I bring him in for his rabies shot, just to make sure.
After reading about giardia, it seems that the mother had it and passed it on to the puppies in her litter. This would explain why other puppies don't have it. I am sure that your little girl will be ok, Amber. Just hang in there and get some anti-bacterial soap in the meantime to make sure that you don't accidentally infect your babies (the two-legged ones
). I think it's also a good idea to get one of those soap-less antibacterial hand creams/whipes.
Please keep us updated on this.