DanMachi is about Bell and the Hestia Familia so Ais doesn't really need to appear, though she does get a small appearance in volume 9. You could just read the synopsis for the volumes
I don't remember her in volume 9... I know she's in volume 8, 10 and 11 though. She's just not the main focus for these arcs, but she'll be around and be important later in the series most likely
oh thanks much for this info guys much appriciated :)