Dude c'mon, that's her personal history...maybe you should let her tell you herself, instead of causing trouble in her name in her own damned hometown, after she's made it clear to everyone that she wants to live a lowkey life.
Are any of these love interests going to become likeable? The prince and this wizard already suck, the knight is on thin ice until he understands his feelings, and the priest is...ok the priest doesn't have an obvious deficit yet. But he's also unlikely to be the ML. Can she just inherit the Duke's land and live peacefully with her brother? Is that so bad?