It was revealed that Gloriosa was member of Rocks which upended the popular idea that it was Shakky who was in the Rocks Pirates.
One theory that has come out of it is that the man she fell in love is Rocks. I think this will turn out to be true.
And to add on to it I think Gloriosa had a daughter by Rocks.
I think that daughter is Sarahebi. Both have pink hair and a flower decorating it. Also, the color of Sarahebi robes matches Gloriosa's snake weapon.
Sarahebi is a snake gifter matching the snake theme of the Kuja Tribe. I think Gloriosa left her in Wano to keep her safe since Rocks broke the taboos of the world.