I am looking for the source of this scan. A suggestion was the manga series "Esprit", where the short haired girl would probably be licca. But at least the scene isn't part of the chapters I could find on the web so far.

A doujin probably? I can't imagine in a manga which such a harmless story where foes usually turn out to get friends to have a cute main protagonist end up losing her unique ability due to some heavy injury (her ability is speed sketching, which goes to the point of bringing pictures to reality and "animating" them frame by frame)