I see the other posts from you and Amy.
I guess the thing I"d toss out there for you to consider - one of the things that I've seen people do (not necessarily you, but others) is that when their cat begins to make progress on a dose, and they finally start seeing better blood sugar control with the blood sugar range coming down, they back away and reduce the dose.
If you really want to get her tightly regulated it means shooting lower numbers. Anything over 120 isn't considered lower even, to shoot. I know it's counter-intuitive, but i think you'll find if you grab the bull by the horns she'll respond with flatter cycles and overall will do better.
No, you do not need to see rising numbers. In fact, if you can shoot numbers that AREN'T rising, you're going to have better control and possibly her cycles will go flatter. A well- regulated cat will have nearly a flat line of test numbers, not rising and falling numbers.