Here we go.
With all due respect, they were BRED to be vicious. It is in their genetic makeup. Why do people consistently ignore that little fact, all the while hand-waving over story after story of these beasts chewing toddlers to pieces?...or in this case, a young adult woman?
With all due respect back to ya. Just as they were BRED to be vicious a long time ago, so were Yorkies. They were BRED to be rat killers in the sewers of England. So just how many stories are we seeing today of rabid Yorkies terrorizing the sewers of any city, toddlers or young adult women?
Not always. Depends on the 'breeder'. But if you are taking them off the streets, as this woman was, and keeping 4 dogs of a type often bred by criminals for viciousness, then yeah...you are asking for trouble.
Take something like this weighing up to 160 lbs, add poor breeding, multiple dogs and a woman of uncertain experience, and you have a recipe for trouble: