Forensic examinations revealed that both girls died of asphyxiation and although that investigation is ongoing, in August Pispirigou was charged with those deaths as well.

Source: https://www.citizen.co.za/news/news-world/greek-mother-on-trial-killing-daughters/

Greek media have nicknamed Pispirigou, a nurse by training, as a “modern-day Medea”, a figure in Greek mythology who murders her sons after their father leaves her for another woman.

Source: https://www.citizen.co.za/news/news-world/greek-mother-on-trial-killing-daughters/