[Journey Mae]

I am looking to add another female Yorkie to my family. So I want to research a few breeders. On my wishlist is a small female (mature weight to be 3-4 lbs), black/tan, and about 1-3 years old. I am not opposed to a puppy, but would like an adult. I am not a breeder, and I do not show, so she would be a another family member. I have a 13yo girl now, so I am familiar with the breed and all the life stages. I was hoping to locate a girl that maybe someone was retaining, but she didn't grow as big as anticipated.
So with that in mind, could someone recommend a breeder that might hold back females until a certain age? If they are already spayed, that is icing on the cake. If I am unable to locate an adult, I will be searching for a puppy, so any recommendations would be great.
We raise and show American Shetland Ponies, so we travel some. We always take our girl with us, she loves to ride in the truck and all the attention she gets at the horse shows.
Thanks for any help you can provide.

Kelly