Yes I know exactly how you feel. I find it extremely rude if a student tells you on the phone that they don't want to do lessons anymore. If you really consider it, a teacher gives a lot of their time, no, dedicates a lot of personal time to their students. If a student just treats you like junk and RINGS you and says, oh we better stop, well then they have no concept of etiquette no matter who they are or how good they are. If they are too gutless to come up to you face to face and talk why even bother ringing.Move on and don't give a *** because talent is nothing if it doesn't have the inspiration to learn more and more. A quitter is not a musician, musicians lose so many times in their musical journey before they actually get anywhere so a quitter will be a crap musician no matter how good they are. So don't waste too much time over it, they will drag you down with them on an unmusical path otherwise.
Pretty harsh on a seven year-old.
*jealousy seeps more deep* jk7 years old and she can probably outplay selfthat is amazing however