In the meantime, the political situation was deteriorating in Greece. The Hellenic Kingdom endured a period of unrest during the Greco-Turkish War, and by 1919 the health of King Constantine I was deteriorating once again. Worried about the future of her father, Helen asked for her husband's permission to return to Greece. The couple and their child thus left for Athens at the end of January 1922. But while Carol left Greece in February to attend the betrothal of his sister Maria to King Alexander I of Yugoslavia, Helen remained with her parents until April, when she returned to Romania, bringing her sister Irene. By that time, the crown prince had resumed his affair with his former mistress, the actress Mirella Marcovici.