She wants to know up until he spends two hours trying to explain 19th century Russian criminal psychology!

On the one hand, they don’t have the stress of having to live together! On the other hand, Rodya has no incentive to play nice……
if they get to know each other, he’s going to realize that she is basically American Sonya — they’ve got the same hope and love and ability to see good in people — and he’ll to latch on to her pretty quickly, so there’s that at least!