[Natasha does know something about having imperfect parents; she wonders if Peter knows that, considering what he knows about the Red Room.

She shrugs a little though.]

I won't say coming through in the end is the only thing that matters, but sometimes that's the best they can do, right?

[They can't change the past. But sometimes those parents can do better in the future.]

And apparently leave you something to remember them by.