Maybe Ruby was making a little baby cup for her "baby-to-be" brother or sister. Here's a guesstimate chart wheel for Ruby. If she is born late in the day her Moon will be in the sign of Leo and not Cancer. The child has quite a stellium of planets in the sign of Scorpio so private is her middle name.
Her Dad is a Cancer so if her Moon is in Cancer, it looks like they could understand each other very well. If she's got a Moon in Leo, well her
Mom's a Leo, so either parental Moon is a great connection for her as she continues to color her world happy.