She's had the business for eight years. Given her start up cost was under 1000 pesos, it's way above the curve. It's a lot of work, and she has a long term business with over 80 clients. What's nice is it doesn't look like easy money, because she only makes a few bucks per storefront per week, but it does add up.
If your business plan is to buy spices in bulk, repackage them and sell them wholesale to stores, that seems like a pretty logical business. The important part is being good with numbers and developing a good relationship with the retailers. But I don't see how you could patent or copyright that anywhere.
She is at a great advantage if she is good at accounting and public relations.
My observation is that Dominicans do not seem to have much of a head for business. In Barahona, the majority of the enterprising businesses are owned and run by "los turcos", ie Syrians, Lebanese, Palestinians and such.
There is an unimpressive Pollo Rico place and a Pizza joint. Los chinos have a corner on all other chicken-related dining places.
Dominicans run colmados, some beer joints, some restaurants with overpriced mediocre fare. There is a good pizzeria. Hygiene is questionable in most places. The idea of supplying soap, towels and toilet paper to customers seems to be unthinkable.