IMO Kitty is the cat finding the hero after the starting video.
Yes, you can find her in Aleroth later on - if the orcs didn't kill her due to the Council quest.
I took care to attract the orcs, leading them away from her - and I protected her with both shields, so my Kitty still lives <img src="/ubbthreads/images/graemlins/shame.gif" alt="" /> - she's not quest relevant.
Kiya
