>Find some scrap paper.
>Leave the book, the wind up toy, and the key near Lily. Drag over a table if needs be.
>Write a note: "I came twice, but you weren't awake. I'm really sorry about what happened. I got you some gifts at Kourindou! <3, Aurica"
>Leave them where she'll see them.
>Start to creep off.
>Pause.
>Walk back over to Lily and whisper into her ear: "The floor is made of cookies~ Eat eat eat~"
>Depart.