"No I haven't, but I haven't seen anyone. I'm blind." Toph reached for her eyes and stretched out her eyelids, showing the man her pale, sightless eyes.

As for his other question...

"I don't know where this place is either. Last time I checked, I was sleeping in a cave on some island in the Fire Nation, and I wake up just outside that gate!" Toph pointed to Muspelheim gate. "I have no idea where my friends went off to, and while I look for them, I run into this really crazy guy!"