[Kaoru's expression is exactly as it should be for this situation, along with the posture, air, and everything else that comes together to form one neat package that says "empathetic". It's one of many well-practiced arts, though there's a little surprise as well, to hear something so personal from Elliot. The little hitch when he speaks of his mother catches Kaoru's attention, but it seems like a soft topic better left alone for now. Later, perhaps - another time.

For now, Kaoru's focus remains on the focal point of sisters and family. A downward, pinched look: a certain extra understanding.]

Ah... Your sister sounds like an admirable person. [The use of past tense was noticed, of course, but echoing it carelessly seems almost insulting.] To take on that much... She must be very responsible and dependable, as well.

[Like Chizuru.

The next topic is one Kaoru doesn't particularly like, but will approach regardless.]

When we were younger, we hardly ever fought at all. To be honest, I can't recall any instances immediately... I'm certain that it must have happened over this or that since fights between siblings are unavoidable, but it was never anything particularly harmful.