That quote is owned by Frank Underwood.

And you're still doing the creepy-except-not thing where you can't tell if the ponies are being genuinely affable.

I must say I'm confused about the dark tag at this point. There's a vague undertone of threat in the story but it feels more like Heather pushing herself past her comfort zone than any real danger. All the ponies seem nice and legitimately mindful of Heather's well being.

Well I guess the next chapter is going to be the one that decides it.