> Check the wardrobe and mirror. Maybe either of them are portals to another world where Patchy got trapped in?
> You check them both thoroughly. Nothing.
> "What was the last magical experiment or spell she was working on?"
> "S-she's been writing a book recently, b-but she hasn't really been experimenting."
>"Maybe she shrank herself really tiny by accident?!"
>Take exaggerated care of where we step.
> "N-no, we've fixed that in the past."
>Check in and under furniture. Failing that, test under bedsheets for softness, just to be safe.
>Visit Remillia, see if she knows anything, or can dispense equipment. Thank her for hospitality. Sakuya too.
> You slip under the bedsheets. Koakuma throws you off of the bed.
> "That's Mistress's bed!"
> You ask if you can see Remilia. Koakuma promptly takes you to her.
> Remilia is in her room sipping tea. Sakuya is standing next to her chair.