Her career was chosen when she began a six-week course under Mary Allen's Women Auxiliary Service.

[2] This was helpful to her career as that constabulary had a more enthusiastic attitude to women in the force and she impressed the chief constable, Percy Sillitoe.

[2] She returned to the UK in 1933 and became the lead policewoman in Leicester taking over from Eileen Claire Sloane.

[1] De Vitré was able to create an essential role dealing with cases of indecent assault and child protection.

[1] In 1944 Sir Percy Sillitoe, who had been her boss in Sheffield, was made the Chief Constable of Kent and he employed de Vitré to lead the women's force.