 The couple was reportedly engaged in 1924 but by 1925 the engagement was off.Zinkeisen married Edward Grahame Johnstone, a naval officer in 1927 and had twin daughters in June 1928, the children's book illustrators Janet and Anne Grahame Johnstone and a son, Murray Johnstone.Zinkeisen was a fine horsewoman and won the Moscow Cup at the International Horse Show in 1934.