A short story told from Nyx's (The First Angel's) POV.

From Once Upon a Happy Ending

Every night in Nyx’s dreams, she travels to a beautiful, hellish realm where she is forced to fight for her life against vampires, witches, and other supernaturals. She soon realizes some nightmares are real—and that there is nothing more dangerous than her forgotten past.

Set in the Legion of Angels world.