Complex sentence: She is led and protected by a representation of France, and guided by illustrations of Night and Aurora who are used literally to portray the actual time of the event, and who shield the queen from spectators and illuminate her path.
Split into simpler sentences: She is led and protected by a representation of France, and guided by illustrations of Night and Aurora. They are used literally to portray the actual time of the event and shield the queen from spectators as they illuminate her path.