[1] She attended West Heath Girls' School, where she was offered a place to study medicine at Oxford.
She declined the offer and served as an ambulance driver in World War II, during which time she met her future husband, insurance executive Julian Faber, who was an officer in the Welsh Guards.
The family lived at Birch Grove, the Macmillan home in East Sussex.
Caroline supported the political campaigns of her family members, including her brother Maurice and son David, and carried out charity work for the National Blind Children's Society.
She died in Sussex on 14 September 2016 at the age of 93,[7] and her funeral was held at Chelsea Old Church, Cheyne Walk, London later that month.