It's just Cinderella but worse somehow.
She's an adventurer who gathers ultra rare resources and knows how to avoid danger while being near super human. After that, nothing of this happens ever again, she's not adventuring, she's rescued by a prince who is madly in love with her and she also is in love with him who is: powerful in magic, powerful politically, intelligent, wise, rich (very important), handsome and single.
By the way, the people that did her evil are now ugly and fat in record time because people can gain weight this quickly without a single person realising - not even the person themselves. Also the people that allowed her to be treated like shit and knew she was god-like? Yeah, they never tried to help her or found weird that she's living in a shit enviroment. The people that have a lot of political power over there? Ignored all of this when they had a golden goose and only react when she's gone while blaming the young sister who's inept instead of securing themselves the golden goose.
Time to drop it I guess. This is why I only read Josei for romance...