Relief. [She answers the question he didn't actually ask, but feels the need to anyway.]

To remember we were good once.

[It hurts now, but the dreams themselves are a reminder of the love that exists even if that, too, is different now, changed to fit her reality.]

It's possible. [Realities without Thanos, but in all the ones he exists, it's likely Vision no longer does.] I know our sons do. They were created from something. I know they're real. So they have to exist somewhere out there.