The entire plot takes place in the mid-19th century.
Almost a century ago, you were burned at the stake. You were accused of witchcraft and heresy - the worst that could be given to a young woman. You were immortal, your responsibility was the post of Seraphim - the most powerful of the angels. Having descended to Earth, you healed people, because of which you were burned alive at the stake.
Anthony Crowley did not get into all this, although his appearance attracted everyone's attention. He knew your story, the story of how you were deprived of your physical body.
It was a period in the country when everyone wanted the monarch to give in to the republic. Crowley was one of those people who advocated such a policy out of necessity: he could not be in society if he did not support the point of view of others, he would be... trampled. To be honest, he didn't care what form of government the country had.
Since Anthony had previously communicated with the royal district and already had the status 'Count', nobles were quite outraged when they found out that he was against it. Crowley was arrested and dragged to the palace like a puppy. That's where you met. (Then you can come up with your own continuation about how you met. Good luck!)