[Bumi doesn't take his eyes off Yin. Not when she allows silence to fall between then, and certainly not once she starts talking. The tale she tells, it's...familiar somehow. Maybe not her telling of it, certainly not word-for-word, but he knows he's heard its like before.

And then one by one...the pieces fall into place.
Blind.
Metalbender.
Sickly childhood.
Overbearing parents.

Bumi's eyes widen in realization.
She isn't just some street waif taken in by Su, or taught by a wayward and wandering Toph in the wilderness...she is Toph Beifong.

Yin is Toph. How...how could he not have seen this before?
Instantly his mind is flooded with so many questions.

Does Aang know she's here? And if so why hasn't he told Bumi to keep an eye out for her? Was it Aang that helped sneak her onto the island? What about Katara and Sokka while they were here? Or Zuko?

So many questions that there's a pause between when Toph stops talking and when Bumi catches up to what she's expecting from him answer-wise.]

No...no...I wouldn't call that living, no. Surviving, sure, but not living. It's been my experience that the two aren't necessarily the same thing. And if that makes me a butt sucker, then so be it.

There's not a single doubt in my mind that you'd have gotten out of that house, earthbending or not. It might have taken longer and way more runaway attempts, but with or without the badgermoles you'd have done it.