She has many of the physical characteristics that are common to Taraboner females. She wears her long, dark hair in multiple braids and has large dark eyes. She has a pouty, rosebud mouth with a petulant look to it. She has not yet reached middle age and is quite beautiful.
Amathera was invested as Panarch despite being rejected by the Assembly of Lords, and primarily attained her position by being the lover of King Andric. During the recent civil war in Tarabon, the Panarch's Palace was surrounded by Whitecloaks and occupied by Liandrin and her group. Amathera was held prisoner by the Black sisters and tormented. She is then rescued by Elayne and Egeanin Tamarath, knocking out Temaile Kinderode who had been tormenting her, in the process.
Although Amathera seemed to have no clue as to what the lives of the common people were like when she is raised as Panarch, Elayne thought that she had a true concern for justice. However, at least before being taken captive by the Seanchan, Amathera knew what her position was and knew what she could do and the respect that her position entailed. During that time, this often made her seem quite selfish.
When the Seanchan arrived in Tarabon, Amathera was captured, but refused to submit to them. As a result, she was made da'covale by the High Lady Suroth Sabelle Meldarath. She was renamed Thera and trained as a shea dancer.
She along with the rest of the group, join and travel in Valan Luca's Traveling Show as a cover to escape Ebou Dar.
Learning some backbone
When Egeanin is demoted from the Blood, she tries to teach Amathera to stand up for herself and tries to befriend her.
After a skirmish with Darkfriends in Maderin Mat and the rest of his group decide to leave Luca's show. While riding through Altara they meet up with the Band of the Red Hand and begin to travel with them.
When the Aes Sedai traveling with Mat finally leave, Juilin and Thera travel with them, making for Tar Valon. It is assumed that she remains in the Tower during the fighting of the Last Battle, since she is not mentioned, but Juilin is.