I work in rescue and the one I work with will not adopt to people out of state, primarily because if it doesn't work out, we want it to be easy for the cat to be returned to us and not have to arrange another transport, and also because we do home checks. That's probably why you haven't heard back, though I can't speak for why no one has emailed to tell you. Rescues vary greatly, some have physical locations, some operate out of a network of foster homes, some are highly organized and well funded, and a few are one man operations that end up resembling hoarders.
I would try a local rescue or shelter. Sooo many cats are put down in shelters, that's where I would start. Just stop in or look on petfinder, or if you find a good local rescue, find out where they have adoption events (ours are Saturdays at Petco) and stop by in person to talk to volunteers and meet cats.
Muffin, Zoey, and Cheddar Biscuit