You'll be ok, Anne. We can see that something's going on with Hyde or she wouldn't need this much insulin. But now that we know that 1 in 4 diabetic cats is likely to have an acro tumor, that means you have a lot of company in the boat. Getting the test results gave me some peace of mind, and permission to plow on ahead with increasing the dose. This also tells you why ProZinc didn't work for Hyde - it wasn't that so much as the typical expectation that a cat "ought" to be regulated on less than a couple of units of insulin. It simply isn't true - and of course we see it a lot here. Each cat just needs as much as they need.
The quote Ruth is referring to is from Jojo, a vet tech who used to be one of the gurus of this site. She was leaving as I came on, but I saw her quoted as saying something like "be the tank. A tank always gets where it's going." It applies to any diabetic cat, of course. You just stay the course and keep moving ahead.
The good news is that she saw blue on 7.0u! That's fantastic! It does seem like keeping a cat's blood sugar as close as possible to normal numbers helps to keep the dose down in most high dose cats.
One other thing to bring up with the vet: when you get to needing a refill for your insulin, consider switching to Lev. It's ph is more neutral and Lantus' is more acidic. Punkin got up to 15.5u of Lantus and he never flinched from the shots, but many cats do react. Many high dose cats flatten out considerably on Lev. Supposedly they both last about 12ish hours, but it sure looks like Lev lasts longer. I think some of what you're seeing in Hyde is that she doesn't get a full 12 hour duration out of the Lantus. Switching to Lev might help her have better control simply because it seems like it lasts longer. Take a look
here at the sticky on the insulin depot, and on there, click on the link that elaborates on the differences between Lantus and Lev. I think it helps if you understand how it works in the body. Many vets are less familiar with Levemir, but the Tight Reg Protocol specifically mentions Lev as being equivalent to Lantus. You adjust the dosing in the same way - the main difference is that some cats have a later nadir with Lev. Cats have nadirs all over the place, though, so I'm not sure that makes a difference.
Would it be helpful to see a couple of spreadsheets of high dose kitties showing the change when they switched from Lantus to Levemir?