The Duchess War by Courtney Milan Book 1 of her Brothers Sinister series is currently free in all retailers I checked and also not only in the US (shows free for me in Germany so check your local stores.)
http://www.amazon.com/Duchess-War-Br...ter-Book-ebook
https://store.kobobooks.com/en-us/ebook/the-duchess-war
SYNOPSIS
Miss Minerva Lane is a quiet, bespectacled wallflower, and she wants to keep it that way. After all, the last time she was the center of attention, it ended badly—so badly that she changed her name to escape her scandalous past. Wallflowers may not be the prettiest of blooms, but at least they don’t get trampled. So when a handsome duke comes to town, the last thing she wants is his attention.
But that is precisely what she gets.