Complex sentence: Another major piece of her fiction during the period was "Jatra" ("The Journey"), based on the problem of militancy/secessionism that has affected almost the entire North-East India frontier ever since Indian independence.
Split into simpler sentences: Another major piece of her fiction during the period was Jatra The Journey. It was based on the problem of militancy/secessionism that has affected almost the entire North Eastern frontier ever since Indian independence.