I think I totally understand the type of cat Monte is. None of my personal cats do this, but my beloved foster cat Pumpkin was just like that. He was a bully! And he ENJOYED being a bully!

I tried medication for him, and the vet is right, it did not stop the stalking.

Choosing to rehome Monte (or Monte and Gus) might make everyone involved happy. Georgia will have relief, you will have peace and Monte can live somewhere that his personality shines!! (and doesn't get him into trouble). I will be hard, very hard, and I wish I could offer a better solution.

I am so sorry. I can't even fathom the pain of giving up one of your own.