Sorry, I can't help you; I don't know anything about breeding. I thought from your title, you were just going to tell how cute your yorkies were. Hopefully someone can point you in the right direction. I'm glad you rescued the little girl, but you know what the say, "No good deed goes unpunished." Here's a link to the Yorkshire Terrier Club of America. There are several Indiana listings.
http://www.ytca.org/breeder4.html#IN The ones with an "R" are involved in rescue. Maybe one of them can offer you some assistance.