No need to worry Fan, when I feed chunks of muscle meat, they basically do the same thing. Dogs do not possess the flat molars necessary for chewing anyway.
As abbie'smom said, this is an issue with premade. Although they get alot of the health benefits associated with raw feeding, they don't get the mental benefits (i.e figuring out how to eat it), the muscle benefits of the ripping and tearing of the meat or the dental benefits from the bones.
Sounds like she enjoyed it though!