Okay first off Dahlia is cute and hot AF.
Second Evie didn't seem to know she was a demon so that must have not been in the original timeline/game... So perhaps this change of her being a demon is something that has changed since Evie has come in to the game and altered that original timeline?
Really hope she stops denying herself and ignoring her feelings for Elsa soon so she stops trying to push her into the original plot of the game.