First concern is the dog's health... consult a vet about siezure activity/health concerns asap.
Second concern is whether your gf is even interested in becoming a responsible pet owner. What I gathered from your post is that she hasn't been for seven years now and you are currently doing all the "disciplining".
If you are both on the same page about wanting to improve your relationship with this yorkie, then it is time to contact a professional (positive reinforcement) trainer.
Sounds like she is small, confused, anxious, and now scared. Please remember that it is not Bailey's fault that her owner did not take the time to train her properly. |