Complex sentence: Of course there was no way to justify her going with him so the "Tania the Guerrilla" myth was invented to explain it officially, and to his wife Aleida as well who was left in Cuba.
Split into simpler sentences: Of course there was no way to justify her going with him so the "Tania the Guerrilla" myth was invented to explain it officially. And to his wife Aleida as well who was left in Cuba.