Yay for pups getting adopted. Poor Polly, hope she gets better soon.

Beautiful is so beautiful... and that is awesome that Tyler has fallen for her.

I don't have much advice though with the prey drive. I just happened to be very lucky with King. Once he learned that he was going to have a plentiful supply of food he never even thought of harming indoor kitties after that. ...well... unless they did pick a fight with him. He'd chase friendly kitties and put his mouth on them, but he never nipped or anything like that. If he pawed at them he was really gentle.

I was doing OK with Koli with squirrels, but that took LOTS of diligence. I don't have any kitties currently. Let's just say that positive reinforcement used exclusively would NOT have worked. I had to resort to using a tiny bit of force on occasion.
...and i don't think in general it is a good idea to use on a pitty. Not only would it probably send the wrong message, but don't they have really sensitive personalities?