Complex sentence: Some sources hold that in the 8th-century, her brother was abducted by Muslim Arabs; following this, she was taken to the fortress of Ani-Kamakh, now known as Kemah, where she lived in isolation for twenty years.
Split into simpler sentences: Some sources hold that in the 8th-century, her brother was abducted by Arabs of the Muslim faith. Following this, she was taken to the fortress of Ani-Kamakh, now known as Kemah, where she lived in isolation for twenty years.