Oh gosh poor you. I really don't know what to say.
Maybe and this is a BIG MAYBE, you can convince your hubby that by getting another kitty for Meka, will help her to settle down. It will be company for her for when you guys aren't home and will make a great playmate also. This will help ease the boredom that she is going through.

I would hate for her to have to go back to the kill shelter.