Twins?

We are beginning to think that this may be a long lost baby of Miss Kitty's and possible a twin of Trouble's!
Our cats let her come around and eat their food and they don't even fight her, which is strange.
We've been saying, "there is Trouble 2 on the porch." But I guess if she keeps hanging around, we need to call her something else. We have enough Trouble here. How about: Goody or Blessing? Got any ideas?
I get her & Trouble confused sometimes, they really look alike.