We have a one year old grandson who spends the night with us occasionally. Absolutely everything in the world is new to him, and he loves to touch everything, pull things and put things in his mouth. As soon as he comes in the door our 5 year old terrier mix, Abigail, who was Grown Up Puppy here a couple of years ago, becomes stressed and jealous. She doesn't snap or try to hurt Miles, but she becomes very clingy and needy, she runs to us if we call his name, etc. we try to reassure her, but sometimes I'm afraid that additional attention and petting will reinforce her behavior. What would a trainer do to show her what we expect from her, and at the same time let her know that she is not being replaced by this "new little creature" who is all over Abigail's territory?