He'd worried for just a moment after he said it that he'd made the wrong choice. Family is a delicate thing. He knows that if someone spoke ill of his siblings, no matter how much he gives them a hard time on his own, no matter how much they deserved it, he would be livid. So when Cho laughs, he feels a rush of relief that he hadn't offended her.

And Ben, for his part, doesn't seem to mind hearing about her family, even if they are intense, and put pressure on Cho. It's probably easier for him, honestly. To hear her talk about a family that is imperfect. If it were all sweet and lovely and encouraging and perfect that would just be... too unbelievable.

"Are you and your brother close?"

Probably says something about him, that that's the first follow-up he asks. He asks it even as he is kneeling down, hands laced together for Cho to put her foot on as a step, so he can boost her up closer to the tree, or is she going to full-on climb in it? Either way, it's not like she weighs much and Ben is happy to oblige.