It is so great that you were there at the concert and noticed the situation.  Had you not been there something horrible might have happened.  
 
  
I doubt that the teen girls purposely placed the little Yorkie pup in harms way, I just don't think they were educated in the importance of taking care of such a breed as a tiny Yorkie.   
I don't know the situation with the breeder but I do have concern that anybody would allow a 5 wk old pup to be adopted so soon.  Hopefully there is a good reason for that, however we will never know. 
I commend you for telling the girls about Yorkie Talk.  I do hope they log on and learn all they can for their pup and also possibly keep in contact with you.   
I really hope the future holds a devoted lifetime of love and care for this Yorkie.  
