this goes hand in hand with yesterday's gift. the ladies dancing reminds us of a party. dancing and music were very large parts of parties and celebrations
in this case - ladies represents women of a higher social class. and the dancing refers to them dancing socially, not as entertainment. during this time women were not entertainers, so it is unlikely that they were a troupe brought in to entertain.
the emphasis is again on celebrating. the 12 days were full of fun and festivities. this highlights that.
in the christian light - the 9 ladies dancing symbolize the 9 fruits of the holy spirit; which are: