John just nods, listening as he follows at Joan's side. He raises his brow curiously, trying to wait patiently enough for her to explain whatever it is about her other slave. He's surprised to hear that she already owns a slave, although he supposes he shouldn't be. Joan is a slave owner, after all, no matter how kind of one she may be.

Once inside the cab, he waits for her to give the driver the address, then he looks to her expectantly to continue explaining to him.