I do rather think that she is only marginally aware of her own culture and how they deal with tadpoles. She is not told anything, I believe. Or, since they make a total fuss to rescue her in the intro, she is very important and does not want to tell and/or that someone in the Gith society wants her dead. I still suspect she is some form of princess, messias incarnate, heiress, the breaker of chains and dragon necks etc., because there must not be normal, frontline grunt companions.
Maybe she was a handmaid of the Githyanki Queen?
I don't mean handmaid in the sense of just a servant, but sorta like the Sisters of Avelorn in Warhammer.
Granted I am not super read up on their lore here, but her obsession with the Queen would make a lot of sense then.
Edit: Also haha, she made me think of Jon in Season 8 of GoT.
'' MUH QUEEN! ''
