There's the sound of Yelena's door opening, and she leans out, bright blue resistance band dangling idly from the hand that's not braced on the frame. Her brow furrows slightly, and she glances towards the top of the fridge where...there's definitely the wrong number of books.

"No," she says. "Not to notice it, at least, since the last time you had it down to bake with."

Which is a somewhat distressing realization - she's become so used to Kate's books that she can't say for certain the last time she actually saw it. She can't recall the last time anything had been familiar enough to just be a normal part of the background.