Rafael is the biological father of Petra's twin daughters, though Petra inseminates herself with his sperm.
While Petra becomes romantically involved with Lachlan, and their relationship is significant in her storyline, he is not the father of her children. Petra's children, Anna and Elsa, are conceived through artificial insemination using Rafael's sperm. This is a crucial detail to understand her family dynamics and personal journey throughout the series.
