Some experimentation with expression utilizing Muffin. Because Muffin's facial features are static and can't move, and she can't speak or make any real noise, her ability to express things in situations are reliant more upon physical actions and mimicry.

On at least a bit of a bright side, it seems as if her thoughts can be read by the Plush Witch to some degree, so her getting a read on Muffin's feelings and needs at the moment helps the situation a bit.