Herrick was born in Ruataniwha, Central Hawke's Bay, New Zealand, on 19 January 1889.

[2] During World War I she was secretary to the Nursing Division at Walton-on-Thames Hospital, England.

Following the war she briefly returned to New Zealand where she became Provincial Commissioner for the girl guides in Hawkes Bay.

[2][3] In the 1946 New Year Honours, Herrick was appointed an Officer of the Order of the British Empire.

[4] She was awarded the Silver Fish in 1949, and in the 1962 Queen's Birthday Honours she was promoted to Commander of the Order of the British Empire, for outstanding service to the girl guide movement in New Zealand for over 30 years.