When I saw the title, I was going to post, don't worry your Yorkie is still teething but I see she is a year old.
I think at this point she is going to be a darling little girl with her ears down.
Were they ever up? During the young puppy stage, one can tape them up but I don't think it would help at this point. Anyone please correct me if I am wrong.
If you had planned to show her, it would be quite a disappointment but other wise, I would just enjoy her with her sweet little ears down.