In some things, she's infinitely self aware. This isn't one of them. Shepard knows a thing or two about responsibility, about things being foisted onto shoulders that aren't necessarily unwilling but certainly not entirely prepared for what that duty might bring. Under better circumstances, she might chance giving him the benefit of the doubt.

Unfortunately, they're naked in a ship with a track record for killing people so the string of titles gets a raised eyebrow and a marginally derisive sidelong glance as they file their through to the communal showers. "That's right." And since they're sharing personal information: "I enlisted when I was eighteen."