Responses
She wouldn't take that risk. Usually back then if there were any nobles who thought of rebelling against the crown the entire family gets executed. Even if she were to act out as a pitiful character, no one would believe her considering the fact that her reputation is bad and she isn't on friendly terms with the Crown Prince, so would he even bother protecting her ?
I don't know why she didn't cry that it was her father that forced the marriage....he deluded her and abused her into it and show them the stab wound saying that they'd kill her if she didn't agree. Wave a pity story and request for refuge. Also say that her father was acting fishy and colluding with some strange people and as a good citizen she can't ignore it but she's powerless and has no proof..boohoo..
That would end her problems all together