and she was a terrible mother.
When her husband was dethroned, he was jailed for while and faced execution. She lost her money, lived in foreign lands, cared for her children but later when her husband rejoined them they had little money.
So when he left them to live with his mistress, Alice had a nervous breakdown at menopause and was hospitalized. Phillip was a young child at the time. When she left the mental hospital, years later, family arranged care for her at home, but she was still too mentally ill to care for him.
So why didn't his father, living with his mistress,care for him?
So Phillip was sent to British boarding school (a common practice back then, some attending as young as age 6) and had no one to care for him until Mountbatten helped him as a teenager, arranging him to get in the Navy and become a British citizen.
Alice returned to Greece alone and when the war started worked with the Red Cross to help refugees, and hid a Jewish family in her apartment. His older sisters stayed in Europe,where many of their cousins were German nobility, and married upper class Germans who supported Hitler.
And her husband was a philandering cad and even worse father.