Sincerely, The Stranger You Call Sister

"First of all," she snarls, "I'd like to say 'fuck you' to both the Sun and God. They can both kiss my arse!" Then, after a moment, she adds wryly; "Secondly, does anyone have any advise for when you're reborn as the villain's twin sister?" Grey!OC.

(1fruba's Story Challenge: Brother Dearest accepted.)