Is it just me or is Runa becoming less and less likeable as this story goes on? She's not just being unreasonably sexist in this chapter, but she's been spouting some pretty fantasy race cliche crap too as of late. Is the idea to make it so we, as the audience, feel less bad when the curse exposes her? Because if so that's a pretty crappy way to go about it -- stories live or die on their protagonist.
No matter how you dice things, realistically Runa's curse sucks and I wouldn't wish it on anyone. But I'm pretty sure that's meant to be what makes the story interesting -- coping with adversity. And maybe having a few cheeky laughs when the curse leads to ridiculously bawdy situations.
I'll just say I'll be very mad if she treats Chris badly when the lie inevitably comes out. Though if we're lucky Runa will have character development by that point. I wouldn't gamble on it though.