Hello and welcome! Sophie is adorable. I'm a little concerned that you are getting her from PuppyFind.com, as many of the Yorkies there are scams, and many more are from puppy mills. Please proceed carefully. If we can help in any way by checking out the website, breeder, or ad, please let us know. Make sure you read the Puppyfind info page about scams. I'm not saying that Sophie is a scam, but I'd rather say something before the transaction is complete, rather than have kept quiet and have you suffer a broken heart and an empty wallet.
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