i think you're confused about the 100 gms of veggies. she means total carbs, not 100 gms in weight.
it may be helpful for you to track your foods for a bit. i like cronometer for this. find out what you're actually eating and then make changes. without data you're just winging it. eat plenty of animal protein because it is the most sating of the macros. round out your plate with lc veggies and you're good for now.
no need to fear fatty cuts like pork belly, but eegads cooking it in oil is really overkill. just run it under the broiler to crisp it up.
on other boards i have seen many women with pcos do better and eventually conceive with going lc. (dunno if you're trying?) cut the starchy veg for now and go easy on the fruit. if you can't eat moderate portions of certain foods, like nuts, stop buying them.
i am 5'-1.5" tall, so am a shorty as well. most days i eat twice. breakfast was just 3 eggs cooked in 1T of butter. topped with 1T of taramasalata and 1/2 an avocado. that's about 500 cals. dinner will likely will be 6-8 oz ground veal with roasted cabbage, followed by some full -fat yogurt with unsweetened coca mixed in.
you're small and sedentary. you don't need a lot of food.
As I ate the oysters with their strong taste of the sea and their faint metallic taste that the cold white wine washed away, leaving only the sea taste and the succulent texture, and as I drank their cold liquid from each shell and washed it down with the crisp taste of the wine, I lost the empty feeling and began to be happy and to make plans.
– Ernest Hemingway