She imagines it's probably the same thing she'd feel if she were told more than once that there was a world where her brother survived. She won't tell him that they're likely just trying to reassure him by telling him there are worlds where things work out; she can't argue with the way that he feels, after all.

"It isn't as if it's anything we can change. It must be frustrating."

She nods, opting to take the suggested subject shift to somewhere that would benefit them both in different ways. It's important information to know, so...

"I'd very much appreciate it if you shared what you've learned about this place with me. Perhaps you can help me avoid making too much of a fool of myself." There's a slight, fleeting smile.