I looked at my list of episodes and the one with the Lassiter was called 'Trash'.<br/><br/>I'm sure even if there isn't a mutual connection then the ship could be advertising for passengers in a way that Shey would find it. Maybe on the Cortex.<br/><br/>Optionally, if Thalia is recruited a bit before Shey joins the ship (crew would join before passengers), then she could let her know.