Seriously though, granted the disclaimer/principle of it's our choice, this isn't the first game where I'm confused what the sensible definition of the relationship is.
Even if we don't label it cannon, the generic and default landlady/roommate definition has a clear implied relation/tension; transgression into sexual/romantic interactions within otherwise familiar/intimate acquaintance (with potential hierarchical implications). So a real landlady/roommate actually work as well as the comfortable/desirable alternatives of blood/foster familial relations or even professional ones if the narrative accommodates (boss/(junior/equal/senior) colleague, the latter in lieu of younger/twin/older sister).
Games get confusing when there's no hint as to cousins/aunts&uncles, etc. but more so when it's not meant to or can't be anything of the sort like friend or girlfriend or fuckbuddy or childhood friend or what?
Anyway seems like you're saying we can redefine at later stages without breaking the game? cus then yea it's less of a big deal and you can enjoy watching us at loss lol.