Welcome to YT...and can't wait to see pic's of your new baby when you get her.
...While a pack n play is fine for the first few weeks you have your baby...just keep in mind and Yorkies do and will climb out of a x pen or pack n play...and could get hurt on the way out...I use a doggy play yard...it has a floor in it for just incase they do have an accident and a top that zips up to keep those little climbs in....They come in alot of sizes...I have 2 a small 44x24 and a large 57x36...I love them...You order them online I got mine from Ebay.