DD has an orthodontist appointment in town, she'll need to leave school at 230 for the appointment at 3pm. Probably only 30 minutes and she has a bus back to school arriving at 350, so with a 5 minute walk, she'd be in lessons at 355. School finishes at 420. (She normally gets a bus after school to town to go to a club.)
Would you send her back to school for 25 minutes or would you assume that is too disruptive and/or not worth it? Art lesson if that makes a difference.