Complex sentence: Although based in Scotland, she divided her time between their home in Letham, Angus, and with her husband in West Africa, and accompanied him during his secondment to the tsetse research station in Sherifuni, Nigeria.
Split into simpler sentences: Although based in Scotland, she spent much time with her husband in West Africa. She accompanied him during his secondment to the tsetse research station in Sherifuni, Nigeria.