After much debate, it is now official.
We have changed Bella's name to Mozilla. (aka Zilla, aka Zilla-monster, aka Mo-Mo)
With so many other dogs named Bella, and with my new niece named Isabella, I really thought it was best to find a more unique name, and one that fit my pup a little better. My little cutie made the transition with complete grace. She immediate started responding to the new name. Of course it took me a good few weeks before I could get used to saying it, and most my relatives still haven't made the change yet.