Hi I am no expert, but ever since I got Toby I have done nothin but look things up on how to train him more efficiently and quicker. In fact I just received an email from this site I have been going to, telling me that EVERYTHING your yorkie does is to get your attention. Maybe you are giving her attention at the wrong times???? When she is bad or whatever??? I have been reading up and experts say that if your dog is doing something wrong, and you yell at her, you are still giving it the attention that she craves. Or you will yell at her and then once she stops, you will pet her head??? She doesn't care whether it is positive or negative from you as long as she is getting all the attention you say you are giving her. It is kinda strange but maybe you might be better off to pay her no attention at all when she wants to throw her little temper tantram......
Like I said I am no expert. I was just wanting to let you know what I had just learned!!! Hope things get better!!!
Ashley~N~Toby