You do realize she's just doing her job right? She's supposed to make sure Arte is safe as they are currently in 'hostile' territory as all she knows about Van are rumors.
For the other thing yes, from our perspective she does come off as overbearing. Even patronizing to a certain extent. But keep in mind that it's from our perspective. Panamera comes from a culture/civilization that elemental magic is everything while every other magic is seen as defective if not outright useless. Then here comes this young boy who completely changes what she thought to be true/right about the world.