Answer:
B. There's no way I'm going to be humiliated by a silly, short-lived crush.
Step-by-step explanation:
As the noblewoman from the prince´s country, she sees this woman he is in love with as a crush, as something with no importance, and as he is promised to marry him, she has been educated to know that he is the love of her life and that to him she should respond, so when she hears about this passion the prince has for other lady from other country, she obvisuly feels betrayed and she feels her destiny betrayed, thats why she feel humilliated by this decision the prince wants to make.