Increased appetite and thirst are signs of diabetes. With the increase in numbers I would look for things that are causing her to go out of remission.
Has her diet remained low carb, wet food? If the diet is not a good low-carb, wet, try switching that to see if you can bring the numbers back down that way. Also, a diabetic cat - even on is remission - is usually better at keeping their BGs level is they eat regular small meals through the day. I see she went 10 hours without eating. Feeding 3 or 4 small, low carb meals might keep her more balanced throughout the day.
Is there any stresses in her life?
If you haven't had a vet appt in a while, it might be time to schedule on and get an exam and some bloodwork done. An infection may be causing the diabetes to creep back in or dental problems. Even if medical condition causes you to not want to do anything invasive right now, you'd at least find your source and know that you have something that will be causing her to go out of remission and will need to be looking at insulin again soon.