Look, it doesn't strike her as strange... it's an old tradition! Maybe a little more dangerous than necessary... but the Nightsisters do need the creature's flesh for their magick. It's a key ingredient in the Water of Life.

But, well, she's starting to rethink it a little because of the expression on his face. Not that it really matters anymore, since she's the last surviving Nightsister to complete the ritual.

"You do not swim?" Almost as soon as she asks, though, she remembers that his planet—Tatooine—doesn't have any water at all. Where would he learn to swim? She quickly dismisses the question and continues, somewhat haltingly, "Then... you may call on me, should you need magick. Or swimming."

It's awkward, but definitely earnest. She even punctuates it with a small smile to match.