The Devil Reversed - Alex McGilvery

Marriette wants to escape her father, accepting an arranged marriage to a cripple, never expecting to find someone she could love.

Zeb is a devil trapped in a weak human body, forced to do the will of the mage who summoned him The cost of his defiance is pain and destruction to all around him.

She sets out to change the Kingdom. If the mage gets his way, Zeb will destroy it.