For those on Xbox, Bamco are aware of the issues with redeeming Cassandra with the season pass and are working on a fix.
I feel like I'm the only one that didn't have the problem lol.
Yeah I couldn't find it either. I kept on looking through all of her poses just to find that one but no dice :/
One thing I don't understand is that her weapon in this game is Omega Sword and Owl Shield. In SC2 it was Omega Sword and Nemea Shield SC3+4 was Digamma Sword and pink Nemea Shield.