I doubt Sigrun will appear again in the DA franchise, sadly. Awakening pulls a double whammy on her; she always dies while defending Vigil's Keep, and even if you bring her with you to face the Mother, she may disappear into the Deep Roads if you didn't do her personal quest.
Was that intentional or an amusing mis-spelling?
I find the "no-mage" party tends to work pretty well against street gangs, but the game is definitely geared towards setting up party combos and there aren't a lot of those between warriors and rogues.