[That stupid issue is still a concern. Whether or not there's any actual relationship there, Leia's still concerned about Hux's influence on Ben, especially since the two of them live together and presumably spend nearly all their free time together. Even more than that, probably, given that Hux also doubles as a guard for him. It's natural to be concerned when this is what she has to deal with.

Leia scans over the parts spread out on the table again, slowly taking them all in. Not all the parts are something she can name, and some of them are probably as close as you could get to the real thing here in Verens (not that she'd know what the real parts in a lightsaber were, having used the same sort of spare tech available here for her own), but she could guess what the parts were meant to do.]

I think it is my business. I've told you before: you may not like it, but I'm still your mother. It's my responsibility to look out for you.