Quna's Partner Card?

Hi so I'm trying to figure out how to get her partner card so I can get that achievement for doing a mission with her as your partner. Can't seem to find any info on how to do this.

Do your main story quests

@HarmlessSyan Ah ok thank you!

@CwwKeeler You get it in Episode 1 about 2/3rds the way through or so.