Complex sentence: Although she writes in Afrikaans, she has translated some of her poetry into English, as has an erstwhile colleague of hers, Jo Nel, and a close friend, Johann de Lange (who is himself a poet).
Split into simpler sentences: Although she writes in Afrikaans, she has translated some of her poetry into English. Other translations have been made by an erstwhile colleague of hers, Jo Nel and a close friend, Johann de Lange, (who is himself a poet).