A small sleep achievement

Twice this week Ru-Jun took long evening naps.  In the past, it was hard for her to get herself asleep later on.  But the other night, she did get herself to sleep on one of these evening nap nights.  I think that indicates progress (although last night she was unwilling to try by herself even though she was very tired and fell asleep immediately when she got on my bed). Progress is not a monotonically increasing function.