I had gotten a puppy from a breeder in January. (This was prior to the puppy I currently have.) His name was Rafiki. I had him for 2 days and he started having horrible seizures. My boyfriend and I rushed him to the vet and $1400 in vet bills later we had to put him down because he had Hydroencefulus and was not going to survive through the night. I was heartbroken. The breeder gave me a refund for the money I payed for Rafiki but would not help with the vet bills. I was so devastated that I had just lost my little baby. Take my advice.. Hydroencefelus is a fatal birth defect. I know you don't want to give her back but believe me you don't want to watch the poor thing suffer and you should not be the one to have to make that kind of decision. Let the breeder take care of it.