Court of Shadows by C.N. Crawford

Rags to riches is supposed to be a nice fantasy. Going from a cheap London hovel to an elite fae institute should be amazing, especially when it involves a medieval castle. It's just not so great when the aristocratic jerks in the Tower want to crush you. It starts when a lethally gorgeous fae--Ruadan--hunts me down. He's known as the Wraith, and he's taken a vow of silence to snuff out illegal magic. Fae magic that I possess. The Wraith lets me live on one condition: I have to earn my place at the Court of the Shadow Fae. I'm a survivor. I think I can manage the competition. Too bad the posh recruits have it in for me. Worse, I'm forced to share a room with the silent Wraith, who is as sinister as he is hot. All it takes is one slip up, and I'm out. And at the Court of the Shadow Fae, failure means death. This series is linked to the Sea Fae series but can be read in any order.