[ He thinks about that for a second, then shakes his head again, unable to agree with her argument in the end. ]

You can't change the past - but if I were so rich, I would offer what support I could to them.

[ That much he could change, instead of wallowing in his own guilt. And then if they still wanted nothing to do with him, well - the door would remain open. He sighs. This is all hypothetical and he can only half remember how they even got from point A to point B here in this conversation. But then there's a pause, and he lowers his voice slightly, his brow pinched. ]

I had a sister. We were separated when she was still very young. But... my life would have been very different if I never had her in it at all. Much harder.

[ That is why he seems so sure of his position.

And also, he realizes, because he hadn't known about her at all for a time. He'd forgotten her completely in those two years.

Thinking about it now makes him grimace again. ]