Comments of chapter undefined of The Vampire Luna

Is she stupid? wouldn't she at least doubt the brother a little I like the royal part of etiquette at the beginning of the story, but I'm not liking her trust decision. I expected her to be more reserved for being in her kind's century old enemy country. I understand her responsibility to her kind on the marriage of convenience, but that shouldn't be an excuse for her idiocy at decision making, on relationship. I mean, logically, if the husband didn't like the brother, she should avoid him, or at least not let him do what he wants for unnecessary pity. I would like her vampire abilities pop up more too. She looks weak, yet is supposed to be trained for the queen position. Not only on work but, describing a fighter too would help.