Complex sentence: Vuyk befriended Indonesian intellectual and independence leader Sutan Sjahrir and originally chose Indonesian citizenship before eventually returning to the Netherlands in 1957, due to strong anti-Dutch sentiments that prevailed in the period.
Split into simpler sentences: Vuyk befriended Indonesian intellectual and independence leader Sutan Sjahrir and chose Indonesian citizenship. But she eventually returned to the Netherlands in 1957, due to strong anti-Dutch sentiments that prevailed in the period.