You can feel the tooth at her gum line but it never came out. My wife manages a dental practice and she told me that it does happen more then you think with kids. With a kid, thought, you would go in and get it. I'm certainly not going to do that with a 9 year old mare.
Her teeth don't look like they are shifting as would happen if you pulled a tooth and didn't put in a false one. My question is, aside from the cosmetics, is there any long term problem I may have to deal with?