Your sister. [ Clarke repeats the words, eyebrows furrowed, the corners of her mouth curved downward. She looks— confused.

It should immediately make sense for people to have siblings here; not everyone comes from a place like the Ark, with its rations and rules, where siblings were unheard of until they discovered a girl whose mother and brother hid under the floorboards during inspections. It's so ingrained in her mind, however, that she has to pause and think about it. ]

Oh. Right, sorry, siblings aren't exactly common where I come from. That's nice, though, that you have your sister with you. How old is she?