After leaving Girton (due to a temporary crisis in the family business), Constance was permitted to accept an invitation from the Assistant Mistress of Cheltenham Ladies' College, Frances Dove, to join their staff.

There she became involved with a group of individuals - including Major Charles Hamilton Malan, Ann Dudin Brown and Caroline Cavendish - who shared the aim of establishing a ladies' college.

Constance Maynard was an integral part of forming the plans for her ideal college - to prepare ladies for the London degree, based on Christian principles.

The group first met for discussions in February 1882, and in May Constance Maynard was offered the position of Mistress (a title borrowed from Girton).

Maynard's diaries show a struggle to articulate the terms with which to express the love she felt for her students, and some scholars have accused her of abusing her power in pursuing relationships with them.

She was elected as old students' representative to the governing body of Girton College and served from 1897 to about 1905 on the council of the Church Schools' Society.

Her unpublished writings including an unfinished autobiography have been digitised by the Archives at Queen Mary, University of London and are available to view online.