The Song Bird is A Pheonix

Vera Everwyn is the oldest child and only daughter of the prestigious Grand Duke. Beautiful. Musically gifted. Intelligent. Elegant. it's no wonder she's so sought after, even the crown prince wants to have her. However. she rejects everyone because she is blessed with the gift to see a person's true heart and everyone wishes to claim her as a possession. The pain of being a Muse. A rare type of natural mana user known for invoking a personal creativity
The only one to appear sincere is the crown prince whom she marries only to find he sought her for her power as a Muse. He was as obsessed if not more so than the others and ends up neglecting and abusing her to the point she withers away.
She doesn't want to die but she powerless. she fades away but finds a spirit who takes the form of a phoenix who gives her another chance at life.
with her second chance she plans to change her fate. She finds a contractual husband and builds herself as a noblewoman, perfecting her magic and establishing herself for after the divorce. It was a good plan until she found herself falling for the man she was sure wouldn't reciprocate. confused and unsure of her self she's also faced with a demon from her past, her ex's obsession manifested and followed her back in time in hopes of possessing her again. This time she's armed and surrounded with friends, family and a true love.