While Natalia would never want to be an assassin, the pirate side of things does interest her, as she'd like to see herself as a heroic sort of pirate. In that vein, I think she'd really admire Mary as the ideal female adventurer. With her airship, Natalia would be able to visit the more isolated communities and help them, so she might be akin to one of those teenagers always asking mom for a ride to the mall. Except instead of a mall, it's a city besieged by calamity monsters.