Being a single mom of three with no support from family and father could be extremely stressful, and that’s what I sense from the OP, a lot of stress.
I am not sure if there is a Private Colegio in Sajoma but there is a large community of educated professionals. Many are from the “pueblo” or have moved there from the nearby campos and have built their nice houses there. The town is growing very fast and most of its economy is supported by the money sent to families from abroad. From my understanding the water system is a mess because of political problems, most of the campos nearby have gotten their water system installed and Sajoma doesn’t have a good water system, ????? that’s the main problem there.
If SKing is willing to be focused inclusively on her kids, Sajoma is one of the best small towns she could raise her kids in DR. There are a lot of activities for the kids, there is a karate school, there is painting classes, baseball and basketball, internet cafes, a very nice church full of activities there are many rivers near by, except never take your kids during the weekends, too crowded with people from the barrios of Santiago, ehehehehe
She could very easily take her kids to museums in Santiago and all the many activities she could find there. As long as she makes those activities very cultural and a learning experience it would be a wonderful experience for the kids. She could also give them English classes at home and bring tons of books from the US, study guides, textbooks, etc.
If You decide to stay I hope to see you around next year!!!! I usually stay in a campo near by when I go there for vacation. Good Luck.