Oh boy. Has she been brotherzoning a viable partner the whole time?
Yeah, she was reckless about it, but I'm gonna say this is mostly on her family and circumstances as a noble's daughter. Her father didn't consult her on anything and even actively avoided educating on some stuff because, in essence, she's easier to manipulate that way. Even if he genuinely cared for her, she has no reason the believe he'd respect her feelings.