100s aren't bad at all - she'd be below the level where glucose toxicity is a concern. But, the normal range is 50-120, and most of the cats who go OTJ (off the juice) do run in the lower end of that range. I see how well Wonton is responding, and while I can't predict the future, well...I do wonder if she's a good "candidate" (anti-jinx). You DO get used to having a kitty run in the greens, once you learn how they respond to insulin.
Take a look at Trix's SS if you have a chance...I try to keep her in the safe greens as much as possible, although there are times that she definitely has her own ideas. Last summer was the best example of my goals with her. You'll see I've even shot her with PS's in the 50s, but I only did so when I knew I'd be around to test, and when I had enough data to know how she'd respond.
But, you do have to do what you're comfortable with...no pressure from us at all!
I'm a little tired tonight, so I'm probably not explaining things really well...I'm sure someone with a better vocabulary will come along!
PS - Listen to Sienne...she's one of those who has a better vocabulary than I do!!!