It's a nasty situation, for sure. My rule of thumb with ferals is, if you can't neuter them, don't feed them. I know it sounds cruel, and very very difficult to maintain, but feeding without neutering, IMO, is actually worse in the long run. I can't offer much more than a sympathy hug at this point, in that respect, as I have all the love in the world for people with a big heart like yours who reach out and feed feral cats and kittens, but honestly, you should consider stopping the feeding, as you will be creating more of a problem for them and eventually for yourself. It's a tough decision - I do know. I can barely bring myself to type that kind of advice to you
Maybe you could just at least try and phone those OK rescue groups? I realize you're no longer in Norman (let me know what you want your location changed to - and I'll do that for you - just drop me a PM), and also realize that OK isn't very small (I'm not an American, so American geography is not my strongpoint!), but all the same, might be worth a phone call, just in case they can get to your place and arrange a TNR operation? Nothing to lose but a phone call.
Maybe you could just at least try and phone those OK rescue groups? I realize you're no longer in Norman (let me know what you want your location changed to - and I'll do that for you - just drop me a PM), and also realize that OK isn't very small (I'm not an American, so American geography is not my strongpoint!), but all the same, might be worth a phone call, just in case they can get to your place and arrange a TNR operation? Nothing to lose but a phone call.