J.J. Marshall 
Dark Tides [EPUB ebook] 
A Wicked Fairytale book 1

With the unexpected death of the siren King, Princess Serena finds herself next in line for the Adrellan crystal throne. But with a new ruler, comes a new agenda. Betrothal to the Land King’s son was not what Serena had envisioned for herself and now she must find a way to live without her vicious instincts. Serena faces love and death. Heartache and ruin. And when a scorned Marquess finds out that Serena had been betrothed to the prince, she stops at nothing to bring down the siren, even if it means taking her voice.