Helen glances up to find the symbol he indicates in the book, her eyes quickly zooming in on the correct one. A slight nod accompanies that. So they have two. Like Nikola, Helen isn't ready to think that one or even two will be enough. They need more, something along these lines.

"So that's 'haven' and 'home,'" she muses, returning her attention to the book. "What else can we think of to look for? Something related to these two words, but not exactly?"

Unless it really is a two-word password and everything else is to throw them off. She finds 'sun' soon, though it isn't quite the same.

"Sun? Or perhaps... heat? Something related to the geothermal energy in the center of the Earth?" The Praxians had used that geothermal energy source, after all.