Hi Sophie. She is probably teething. I brought my little girl home at ten weeks and her ears were down. The vet told me they are down due to teething and would come up on their own. A few days later, one came right up but the other stayed down. Just in case, I shaved both of them. A day later both were standing. Six weeks is very young to leave the mom. Yorkies really need to say with their moms atleast until 10 weeks but preferable 12 weeks. My four year old Yorkie came to me at 5 weeks and she needed to be bottle fed. I'm surprised your girl was weaned so early. Their little teeth are barely poking through at that age. Best of luck to you. Elaine |