I got jumped on for saying people believe everything they read and hear, so I will not say that. What I will say is what everyone else has said...nothing is free in life! IF there are any yorkies, I will bet they are a mess.
What I am going to suggest is that you tell her to meet you in a public place. I would not be going anywhere to pick up a free yorkie...or two. No way, no how.
Forget taking someone with you....just do not go! Unless you plan to take the police!
