Sadly, Kurita-sensei learned how difficult it is to maintain two manga titles. Her bread and butter is "My Wife is a Little Intimidating." So "How My Wife's Mood Changes the Weather" was a side manga project. Once Sensei realized she couldn't maintain two manga and keep the quality up, she just did enough chapters to complete volume 2 of the manga.
That said, it is sad the manga ended. While there have been many manga titles featuring a supernatural being getting married to a human, there aren't many manga set during this time in Japanese history. The closest I've seen was "Natsu no Arashi", where they'd go back in time to World War II Japan at times.