Most dogs who are fearful at the veterinary hospital show signs in their daily lives of being afraid of unfamiliar people, dogs or environments. Continuing to provide them with bad experiences will only stregthen their perceptions that people and strange environments are dangerous.
In this case we can help by having the veterinarian give treats to begin to countercondition Mischa to the anxiety-producing environment. You can see, however, that she is still unruly and hard to handle. Fitting her with a Gentle Leader gives the handler an added measure of control and safety.