At the very least, Korra seemed to be accommodating the news of other worlds with relative ease. Perhaps it wasn't such a strange thought wherever she came from?

Unfortunately, Tsubaki had only guess work to go by, and that included trying to figure out what an Avatar was supposed to be in the context of what Korra was talking about. She thought it best not to ask. There would be time to have a longer talk later, if need be. "Be careful, either way... Relying on your native power can get risky..."