oratrix
/ɒˈreɪtrɪks/Definitions
1. noun
A female advocate or pleader, especially in a legal or ecclesiastical matter.
“The oratrix made a passionate argument before the court.”
2. noun
A woman who advocates or pleads on behalf of another, especially in a formal or official capacity.
“She served as an oratrix for the charitable organization, speaking on behalf of those in need.”