I do prefer purebred yorkies but that is because I love the standard show dog look and the well known backround. But I love mixes just as much!! Trixie is a yorkiepoo and I wouldn't trade her for the world, I love every bit of her!!
I think that was incredibly rude of her to be like that. I see any dog and I go nuts over them, doesn't matter if they are purebred or not. But some people are like that I guess.
Oh and your baby is a cutie!!