[His mouth may not be able to say as much but his thoughts are easy enough to pick up on. Ever since Raven left, Charles has been mindful of the fact mutants can hide in plain sight...and he's been hoping she'll come back. He'll let Kale play the part though, not letting on that he knows.]
I'm afraid you're wasting your time with the foot. [He tells him, reaching to scritch behind an ear.] They haven't worked for awhile now.