I don't think anybody here dislikes you....on the contrary why would we have taken any time to read and respond if we didn't want to try to help you out, but you really don't seem to want the help you've been given.
It seems to me that if your mom is guilty of anything it's perhaps that she hasn't prepared you for leaving home. I see our jobs are parents as being to best prepare our kids to be the best people they can be and part of them is preparing them to leave home when they are adults. She treats you like a kid and you allow yourself to be treated like a kid, so until you decide to change that, you're a kid, in her house. You want us to intervene? How? via email? No, you're going to have to take some initiative if you want this "maddness" to stop
I'd like to back up to the litter box story...are you telling me that the only resolution to the out of litter problem is for you to try to force her to go to the store to buy litter? I'd suggest you can shred some newspaper as a temporary fix (it's what the vet clnics use) or even some dirt from the back yard (I promise, kitty won't mind) oatmeal, potting soil...
I don't mean to be negative, but how in the hell are you going to be a cop in a year and a half? You can't figure out how to resolve your own domestic conflict, you can't figure out a "work-around" to filling a litter box. What are you going to do when you're presented with a problem that you haven't been specifically trained for? Text Somebody? Now, I probably don't know much about being a cop, but I've seen enough "Adam 12" and "CHiPs" to know you have to be able to think on your feet and come up with creative solutions. If I were your career counselor, I think I'd suggest that you live a little more life before becoming a cop, both for your sake and those you're supposed to protect.