If she thinks for a second that she's actually going to get more out of this than him, she's far off the mark. Her definition of "getting more" doesn't take into account that his world is far less technologically advanced - and he's going to keep it that way. If someone believes they have the upper hand, they often disclose more than they should.

"Given that you're responsible for your brother's safety, it's my assumption that you're going to set up quite the security and information network here in the Nexus. I'd like to keep apprised of anything they learn. I'd also like to know more about the mundane things in your world: basic technology, cultures, belief systems." He pauses and smiles briefly. "With all of the worlds connected to this place, I'm trying to get a better handle on what to expect. The best way for me to do that is to learn more about worlds that aren't my own. No intimate details of you or your family are required, of course - just general information would be sufficient."

It's a lot to ask, and he's willing to negotiate terms, but the question becomes how much Isidor is willing to part with to get what she wants.