Either way, you belong in the room. Ballet gives you the freedom of moving to beautiful music, and an hour and a quarter where nobody needs anything from you except a plié.
Ballet for adults has no upper age limit either. Over 50, over 60 and wondering if you have left it too late? You haven't. Every exercise works at your own range, and you never jump higher than your knees allow.
Under the music you are working on balance, co-ordination, posture and core strength: ballet is gentle, low-impact exercise for adults. Your teacher also trained in diagnostic radiography, so she knows how a body is put together and builds every class with that in mind.
Release your inner dancer. You know you want to.