
Your bitch may or may not be a carrier, and unless there is a Definitive DNA test available shortly you can only tell if the animal is affected.
Assuming her grandam was mated to a clear dog, then half the offspring will have been carriers, and half clear. You have no way of knowing which group her Dam fell into. If her Dam wqas a carrier, but sire clear then she has a 50/50 chance of being carrier or clear.
The only way you know a dog is a carrier, is if they have the bad luck to be mated (unknowingly) to another carrier, then there is a statistical probability that 1 in four pups would be affected, half carriers, and 1 in four clear.
All that breeders can do when a definate carrier is discovered is not to have that individual on both sides of future pedigrees, just in case both individuals although clinically unaffected, may be carriers.