And it sounds like a lovely bird... It's always sad when they go on. My old bird Captain, which was my first cockatiel, was very similar to Anna. I had a boyfriend that thought he would set the cage outside in a beautiful summer day while I was at work. What he didn't know is that Captain was very smart he opened his own cage and flew away. This is not a climate for him to survive in because we have winter. I still miss him to this day.
Yes... The tom-and-jerry aspect of having a bird in the cat in the same house can be a little stressful. I have the cage open now and the bird has been sitting at the door. The cat has been stalking and I have a water bottle ready to give him a little squirt to remind him to stay away.