@Psychronia Not bad? She's very childish and selfish and naive. Nobody likes political marriages, but it's still a must to form alliances and benefits. And declining one could lead to war because it's humiliating to the other side and obviously an act of not taking the hand offered to them. Usually, one can't refuse a political marriage of such scale.
Well, she did say she'll kill herself though, so if she did maybe her family wouldn't have faced the consequences of turning down a duke's marriage proposal with the excuse of her having died. But that's still not certain either seeing the reputation of the would be male lead.