Lori --
I'm not great at beating around the bush so I'm going to put my opinion out here. There is nothing on Ginger's SS that indicates that she is getting too high of a dose. IMHO, you should not be reducing her dose. One possibility is that you are seeing new dose wonkiness (NDW - despite increasing the dose, numbers go up).
Another factor that may be complicating the picture is medical. I tend to think you have a UTI that is out of control. If I'm not remembering, please correct me but I don't recall your vet getting a sterile urine sample (cytocentesis -- collecting urine via a needle into the bladder) and then running a culture and sensitivity. This is the only way to know if Ginger was getting the correct antibiotic. Peeing outside of the box is usually an indication of a UTI. Not peeing can be a blockage. As I said earlier, the symptoms you are describing are not trivial -- they could be serious. If you risk decreasing insulin with an infection on board, you dramatically risk ketones developing.
Ginger is going to feel lousy until you get her out of high numbers. The only way to do that is to treat the medical problem and/or more insulin.