The Dragon of Sedona. The Treasure of Paragon, #4

Some memories are magic.  Darkness he can't forget. Exiled dragon prince Alexander never recovered from the murder of his mate Maiara, an indigenous healer he met over three centuries ago. Every waking breath is a painful reminder of what he lost, his grief compounded by the constant presence of her immortal red-tailed hawk, bound to him since her death. Light he's afraid to remember. When three of his siblings arrive with news that he may be in grave danger, he secretly welcomes the possibility of a violent end to his torment.
But as the four reminisce about how they came to know Maiara in the New World, they begin to see her life and death from a new perspective. Magic that could change everything. For the first time, the source of Maiara's power is revealed and inspires a new but precarious hope. There may be a way for Alexander to be with her again, but his second chance for a happily ever after is risky at best, and at worst, could cost him the only thing he has left.