Your best course of action is to go see a vet with behaviour in your area and get professional help.
I would go look at American College of Veterinary Behavorialists (ACVB)
the link is in the Yorkie talk Libary section.
Or ask your own vet to send you to a vet with behaviour training or a Certified pet behaviourist.
A skilled trainer maybe able to help but only if postive based in their training.
JL
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"The truth about an animal is far more beautiful than all the myths woven about it." Konrad Loranz |