Complex sentence: It is believed that La Doncella was an "aclla", or Sun Virgin-she was chosen and sanctified as a toddler to live with other girls and women who would become royal wives, priestesses, and sacrifices.
Split into simpler sentences: It is believed that La Doncella was an "aclla", or Sun Virgin. That is, she was chosen and sanctified as a toddler to live with other girls and women who would become royal wives, priestesses, and sacrifices.