We usually suggest a +2 or +3 test because those can show you whether she might go quite low at nadir. If the +2 especially is similar or slightly higher than the PS the cycle ahead is likely to be uneventful - ie. flat or only small dip to nadir. If it's significantly lower than PS (50+ points) that can be a sign that she might dip fairly low at nadir and you'll want to be ready to monitor more and intervene with snacks. You can try giving a small (1-2 tsp) snack after the +2 test if it's quite a bit lower. That can prevent a more drastic drop. These are all general recommendations and descriptions of what we usually see. Cats sometimes have their own ideas about all this though!
As time goes on and you see more of these situations and get through them using what you've learned I think you'll be less worried about having vet backup. You'll have the confidence to negotiate these lower BG ranges and keep her from a symptomatic hypo even if you do have to white knuckle your way past a lime green number or two. We all had to learn this and monitoring the way we do and using food when needed to control BG means that few of us ever have to cart kitty off to the vet with a dangerous hypo. That tends to happen more often when the cat isn't being monitored at home. Of course, nothing is carved in stone but learning to deal with a tiny bit of risk and extra stress is the key to getting Goma into more regulated BG. You're well on your way I think!
