Dar had figured Seyli was likely Kel. But presumably all the crew with good, solid High Language skills were originally He*archate of some flavor, and they were all on the same side now.

"I was on the other side for a couple of years, facing Kel troops. Stubborn native scum, that was our side." She says this quite matter-of-factly, not as though she's trying to get a rise out of Seyli.