Yea, her view on history is not only wrong, its really fucking wrong. Generally, children in older times were considered extremely expendable. This results from the fact that young children especially, are really worthless from practical standpoint. In times of desperation, it makes absolutely no sense to save one over an able-bodied adult. She is correct that men were often considered more expendable than women, but that was mostly the case due to the fact that women weren't considered able for situations that put themselves in danger. Men were expected to do the work and save what was considered at the time the more hapless gender. Its mostly a recent and ~civilized~ concept that children are worth saving.
In related news, I like game of thrones because of how realistically he approaches this concept. Women and children are definitely less expendable here. This trailer kinda sucks, but im pumped anyways.