Be careful not to pass your stress on to your pet when you take her off to the Vet or the Kennel.
Approach the expedition in a happy, relaxed manner as though you were taking her for a walk at the pet park.
Put on the harnass or collar and lead and take a few Beano to the car with you, while you chat in a friendly way.
Your dog is highly sensitive to your mood, and will accept your word for it that this is going to be fun. Resist the urge to continually stroke and comfort her.
If it is at all possible, take the dog to pick the children up from nursery school or school. The pet should be able to walk on a lead without pulling. Allow children to pet her if you can. Start when she is still a pup. If she is adult, start by walking about in the carpark with her until she is relaxed. Then allow people to interact with her when you see she is in a friendly mood. No pet should be aggressive off her home territory and in familiar surroundings.