Veiled Magic - The Veiled Magic Series, #1

Since Witches came out of the broom-closet in the early 21st century, they have worked alongside humans as police officers, healers, stock traders, and more. But they aren't the only paranormal entities in our world... Police officer and Witch Donata Santori spends her days interrogating dead witnesses by summoning their spectral forms. Normally the job is little more than taking statements and filing reports.
But when she's called in on the case of a murdered art restorer, she finds herself suddenly in possession of a mystical portrait that both the human and paranormal communities would kill to get their hands on. Unable to take on the forces hunting her alone, Donata seeks help from two unlikely and attractive allies: a reluctant shape-changer and a half-dragon art forger. But as the three of them hurry to uncover the truth about the powerful painting, Donata realizes that she's caught in the middle of not one but two wars-one for possession of the painting's secrets and one for possession of her heart...