"Hmm?" Rex is immediately confused by the question- as with anything that is outside of his expectations, he starts to contemplate far too many possibilities. His head tips until it's nearly sideways.

After some deliberation, the only thing he can think to say is the dreaded-

"I'm don't understand the question."

No one mentioned being hurt, did they? He's fine. Perhaps her grasp of English is weaker than it seems and she's hurt somehow, a thought which keeps concern in his heart but off of his face.