When he made a mistake over daylight saving time (failing to plan properly for his transformation at moonrise), he began to transform in front of her before fleeing.
The sunrise of the first painting is mirrored here by a moonrise, a pale light reflecting in the ruin-choked river while the standing pillar reflects the last rays of sunset.
For a northern latitude on earth of 55 the following table shows moonrise and moonset azimuths for the moon's narrowest and widest arcs across the sky.