A 1951 Chevrolet truck may be an interestig historical vehicle, but it is not a vehicle, particularly with its original engine, that is good to drive on the interstates or in traffic. It is a hobby vehicle. I owned a 1950 Chevrolet one ton pickup truck. It was great for low speed local hauling. The Chevrolet stovebolt 6 in the truck, which I suspect is the same as the engine in your truck, was a good engine for this purpose. These trucks are geared low. I even used mine to stretch fence. However, the top speed would probably be about 65 mph and would not be suitable with its slow acceleration for highway use. The steering took quite a bit of muscle, and the brakes required quite a bit of effort. Even so, the stopping distances were quite long. Unless the brakes have been upgraded to power disk brakes, this isn’t a vehicle for a female teenage driver.
I even disagree that this a a vehicle for a veterinarian. Veterinarians who specialize in farm animals often drive quite a distance between farms. The veterinarians I dealt with when I lived in the country had closed vehicles to carry their medical equipment–they weren’t carrying the equipment in the open bed of a pickup truck.
Sell the truck. If your daughter needs transportation, purchase a more modern car. When your daughter completes veterinary school and sets up her practice, then is the time to select a vehicle.