Aww, how cute! I love rotties! Such gorgeous animals.
As much as I'd love to tell you all the great things about these little babies, its probably more important that you hear the negative issues, so that you can make a more informed decision. So honestly, yorkies are not known for being a very social breed. There are a select few that love meeting new people and being friendly, but most yorkies are a little shy with new people, and they're not very good with kids (more like kids are not very good with them).
She will definitely be playful, and that is a great age to get her! She'll be past a lot of the puppy phases, and just ready for love!