[ Toph doesn't mind the contact, though she's a little confused by it until she remembers how people had treated her back when she was pretending to be a good helpless daughter. Since Vi has been cool about it so far, she gets a pass this one time. ]

Okay, let's go. And I don't need any help getting around. If it's touching the ground, I can tell where it is with earthbending.

[ It's actually not even remotely a secret. Toph is proud of her abilities and her disability, and she has no reason to keep it to herself. ]