Well, first of all she seems like a very sweet person. She really is. She likes sweet things and plants. She is funny and smart.She knows everything about plants. But if you really get to know her, she is a whole different person. If you really get on her bad side, she would poison you. But she is very nice if she likes you.
Her weaponry is poison. Since her father is gardener she knows a lot of plants. She knows that even every not poisonous plant has a bad side. That means she knows how to make from good plant to bad one. And she has a lot of knowledge. She knows martial arts, how to use any kind of weaponry and more.
Her family was serving that family for generations and helped them in war, like help them to poison their enemy.