This particular person was a Tah'Nuhnan woman, hailing from the planet of Tah'Nuhna in the Mid Rim, where she held the position of leader. The length of her whiskers were an indication of her age, and she wore voluminous robes. She met her death when the First Order destroyed Tah'Nuhna.
The Tah'Nuhnan leader's initial appearance was in Allegiance 1, but neither her name nor her gender were specified at that time. It was in the Behind the Scenes section of the comic that it was revealed that she was the leader and that she was female.