[@Prince of Seraphs] <3  YOU READ THE LORE!  *squees*  You make my little writer's heart flutter, you do.  First a story for a constellation became actually based on historical canon, and now my pixie/sprite feud?!  *facecling*

I think Sini might have a taught wariness and perhaps a bias against Raven and her kind, but she wouldn't be rude.  It'd be interesting to play with that.

Rereading the initial post, it doesn't seem that fey as a whole are unable to lie outright.  In fact, it's implied they are, as otherwise the bit about "asked a question thrice, and a Fae must answer honestly" wouldn't make sense.  Some fey with an inability to lie could be fun, though!  And certainly if they have a reputation for being unable to lie people are more likely to believe what they appear to be saying without looking at it closer.

[@LadyRunic] Can you confirm on whether fey can lie or not?  My take is that they can, though they may choose instead to use technical truths to deliberately mislead.