DD has only ever worn trainers or lace up school shoes and is a very keen on sports so never wants to risk affecting her feet with slip on shoes/ballet shoes etc. However she wants to fit in with the others with sandals or similar for her yr 11 prom. Ideally she needs some height but would want to be able to be very active and not risk any injury. Are there any other options? She will be wearing a long prom dress.