In 1930 she was diagnosed with schizophrenia and committed to a sanatorium in Switzerland; thereafter, she lived separately from her husband. After her recovery, she devoted most of her remaining years to charity work in Greece. She stayed in Athens during the Second World War, sheltering Jewish refugees, for which she is recognised as "Righteous Among the Nations" by Israel's Holocaust memorial institution, Yad Vashem. After the war, she stayed in Greece and founded a Greek Orthodox nursing order of nuns known as the Christian Sisterhood of Martha and Mary.