Defence of the Reich: Female Fighter Controllers?

[Boomerang]

Donald Caldwell refers to III/JG 26 being directed by a female controller during a highly successful interception of American bombers over southern Germany on 24 April 1944 (JG 26 War Diary Vol 2 page 247).

Can anyone throw light on the 'career path' a female controller would have followed to reach such a responsible position? Clearly combat experience can be ruled out, so I am interested in how else a woman could have been appointed to the role.

Also, is the female controller pointed out by Caldwell a one-off, or were have other examples been identified?

Thank you