Are there any scenes with Sheila in the game? The best I could do was to make her a character that lowers Erina's Lewdness. But she's still not in the gallery.
Well you can make her get naked but i think that's it. She's gotta be in adult form and in the post game take control of Grus (gotta lose to him 2 times to unlock this), then talk to her at the upper left.
