Complex sentence: Her disappearance in July 2010 sparked protests and rumours of kidnapping and forced conversion to Islam, and her subsequent return to the Church inflamed sectarian tensions between Egypt's Muslim majority and Coptic Christian minority.
Split into simpler sentences: Her disappearance in July 2010 sparked protests and rumours of kidnapping and forced conversion to Islam. Her subsequent return to the Church inflamed sectarian tensions between Egypt's Muslim majority and Coptic Christian minority.