Oh I understand completely. Money IS an issue...especially when you thought you were getting a healthy animal and giving her a chance. Please understand that I and likely no one here is "judging" what you're doing or why! Please know that. It's just that we get passionate about things and try to help...sometimes more than we should and that often can come across as being judgemental. I know that I'm not being that way! Not at all. Please accept my apologies if I came across as sounding that way.
But, given what I'm reading in your posts (now that you've filled us in more as to the entire situation), it's sounding as though you're just plain and simply not equipped to handle a diabetic new kitty that you didn't bargain on having with a major health issue and all that goes with it. No one would blame you for that...especially, since you didn't bargain on this situation with all of your other obligations.
I DO hope that someone will take you up on this and help this poor kitty with a new home where they are more able to give the kind of time and money required to help. Fingers and toes crossed that you find that person soon for your sake and kitty's sake. I don't know where you are but, I know that if I could...I would take in 20 more. I just don't have the room nor the funds available for it. However, I know that there ARE people who will! Hang in there and keep trying!
And, in the meantime, you might want to check with other vets who have more experience with the pills for now and until you can re-home this little one. Sounds like a lot of vets do go to insulin so, some may not have any knowledge about the pills for that reason. There HAS to be some around though. And if not...hopefully, you can find some info on the net and keep kitty on the low carb, wet food until someone else takes over.
Wishing you well! Really. If I hear of anyone willing to take kitty on...I will post back. Please keep us all updated though. We may sound like we bite...but, we don't LOL
By the way, as a note from experience...most vets are totally unaware of anything out there commercially in terms of food as they don't do the research. However, Hills, Purina and Royal Canin are fabulous in sending in reps who will sell the living daylights out of their prescription foods and that's all that vets really know. Even they're not out for the money aspect of things...they simply don't know what other foods to suggest so, they will push the prescription formulas. They pretty much solely feed their own pets those foods too. YOU are on the right track and Friskies (certain flavours and formats) is fine. So, is Fancy Feast and many other canned foods out there. Just NO gravy formulations. Those are higher carbs and you want to be as low in carbs as possible with pills as the mainstay treatment.
And, I'm sure others will chime in here with a link (I'm not familiar with it enough to give help) on an association that will offer financial help for those dealing with this and other health issues.
Someone else know of where? Link?