Ive been reading this thread and a couple of others that were.....intense.
When I bought Jasper I was so ignorant and had NO idea what I was doing. Now I'm wondering if I bought him from a byb. There were kennels behind the house and while the pups and another female were inside, the parents were not. They live waaaaay out in the boonies. Not that that matters. My point is, if I had been on YT for many years, those alone would have been flags to me. And, as hard as it would have been to walk away from a pup I had just held, I would have. Oh and I looked at the site again last night. Jasper's sister is still for sale. She keeps dropping the price.
OP,I'm new here and aren't even close to being as knowledgeable as you are. I believe you know in your heart what the right and wrong thing to do is. You are a grown woman. I'm not lecturing and definitely not trying to over step my bounds. I'm just asking you to think about everything you've learnt over the years. If you still decide to buy this pup I certainly hope she will have a long and healthy life. I also know you will still have the support here you've always had. Good luck to you and that sweet little girl.