Good for both of you!
Funny how different people have different things that it works to watch. Keeping fats low is one for me, too. Counting total calories is as easy as counting fat grams with the fitbit app, so I switched to that --after this many years of keeping fat intake low, I pretty much know those do's and don'ts.
I love dried fruit and could easily scarf down a couple of handfuls of it. I have to remind myself of its equivalent in fresh fruit, and then I know what a "serving" should look like.
Fruit and cheese is a great combo for regulating blood sugar... the fructose is released more slowly into the bloodstream than sucrose would be, and the protein and fat (even low fat mozzarella has a little fat in it) in the cheese slow down the sugar release further yet... so instead of the spike that you'd get if you ate the same calories in, say, hard candy (or even the sugar spike from eating an apple on its own), you get more of a low-lying hill shape on the graph, a gradual increase and decrease in blood sugar. Whether you're diabetic or dealing with another metabolic condition or not, avoiding sugar spikes is a good thing!