Attack of the Stickers

I noticed a sticker on Justin's door as I walked by. I am almost 100% certain that this is Norah's work.

Then I noticed a sticker on the side of her bed. Now completely certain this is her work.

Then the stickers on her door appeared.

Today I found these. I think we need to find a different outlet for her to express creativity. And remove any books that have stickers at the back.