how do I unlock 5th regular scene for Maria, it just says "talk to her in her room to try a new position" but there's no option like there was for Alice
If you used a transformation potion on her, then you won't be able to get her scene (since it's pretty much the same as her post-transformation scene). If you really want to unlock it, turn the filter for the transformation on, then talk to her in her room ^^