I did when I first moved in and my cat Bubba did that - he leaned way out, just like Zoe. Scared the shit out of me. The first 12 times he did it, I rushed out to pull him down and then I realized that was not too practical. So I just trusted him to not fall off and he didn't and neither did Zoe. It's still scary to watch, I hope she loses interest . (My other cats have all been too skiddish to even try it.)
I guess I need to get her a tag with my phone number on it just in case. I think I have at least one in my cat collar box.
And I think, for now, I can put Zoe's food in the bathtub. I don't think Betty would even look there but Zoe won't let her close so I think that will work. She does not appear to be a big eater. I need to make sure she gets food. I may stop and pick up some dry food for her tomorrow.
My neighbor, Ann, came over and was sitting on the couch talking to me and the next thing we knew, Zoe had hopped up on the back of the couch and was loving against Ann's head. It was funny.
All else is good and fine.