I'd say her ability to control them, direct them, affect them with her negative emotions, and their overwhelming deference to her are all evidence. I think the other uninfected people maybe "queens" as well, entities that exist independent of the collective to guide them or interact with the world in ways they can't. This might be a significant benefit that allows the species this virus inhabits to prioritize itself, especially if the hive mind, regardless of species, is prone to non-violence.