I'm sure she'll explain it's the crow princess status and obligations she doesn't want really quick, but that still hurt so bad.
Well, as he doesn't seem to do a lot of the prince's work, I'm sure he'll find a way to persuade her there's not much work to do...
If I understand her well, she's not even lazy, it's just she wants to enjoy her life without much stress and responsibilities unlike her precedent life.
Or she might say she doesn't fell fitted for the role.
Either way he won't care much and still took her as a wife. They can even elope if needed, he's strong enough to protecc her !