K.F.
If I were you I'd save my money going to the dentist, and just keep wiggling the tooth till it comes out. If so much of it broke off with the crown that it's hard to get ahold of, or slowing down the loosening process; go the grocery store in the dental isle. There's this stuff for temporary filling's that also is used for temporary attachment of crowns and such. Get you some of that and secure the crown back into place for now. It should calm you grossing out and give something for her to tug on again.