[ For a moment she gives him a cynical stare, but then she speaks up - her own voice filled with sarcasm as well, since the answer to 'why the question' should be obvious. ]

Because I randomly felt like asking it.

[ a sigh and she exchanges the sarcasm for her usual deadpan again. ]

It's obviously because I'm not just going to let you sit here and become monster food. Unless you're a masochist who enjoys that kind of thing, then you can sit here for as long as you want, I guess.