Hi , I'm not saying this because I don't think you should have puppies but it is best to let the breeders,(that know what to look for)breed. We all want the Yorkie breed to be its best. Back yard breeding (thats want you want to do) will not always can up with good dogs. We have so many unwanted dog today!
If a family member wants a puppy like your bab, ask the breeder when they will have puppies.
Have fun, we love our YORKIES!