Yes, having an update was really neat! I'm pleased to see that Sneaky didn't break gender coloration rules. I would have been quite confused had she turned out a roo.
I would put my money on a greenish egg for her.
I still say her feather pattern is all female. It IS possible that you have a roo that is somewhat of a mutant, but that would be a genetic rarity. It's far far more likely that you have an early developing girl. Those happen fairly frequently.