"You have changed."

She emerges a bit from her pile of blankets, leaning her elbows on the mattress and resting her hands on them. He has changed, and while it is different from what happened to her, it's still a clear physical change. Maybe it is the same?

(It's not, of course, and he won't be able to spot the soft short black fur covering her skin now or how pointy her ears have gotten, or how her hands have gotten just a bit out of shape.)