I'm so sorry you're struggling, April. Have you tried Cobb Hill? I am suggesting because you mentioned neuromas. I haven't been diagnosed, but I suspect I may be developing something similar. I particularly abused my feet last weekend (walking and dancing for hours in heels with little cushioning, both days), and they were very painful even after resting up most of Sunday afternoon and evening. Monday I wore my Cobb Hills to work because it's finally warm enough, and *zero* pain. They seem to have the perfect amount of cushioning and support. I'm on Day Three wearing them all day and my feet are perfectly happy.
I don't have a specific model to suggest; the ones I wear are open-toe, and have about a net 1" heel. (There is a very similar version to the "Abbott" that has a closed toe and more open heel, so it's still very summery.) But they do have many other options as well, and many/most come in 2 or 3 widths.