She is taller than Siuan with pale yellow hair and cold blue eyes. She is arrogant and humorless. (NS,Ch3) She is haughty. She has pale yellow hair, blue eyes and a prominent chin. (LoC,Ch8)
Chronology
Tarna Fier comes to the White Tower as a wilder. She cannot hold saidar unless she has her eyes close which means she cannot channel. Galina takes a personal interest in her and beats her until she overcomes her block. (LoC,Ch13)
Tarna brings news to Siuan and Moiraine that Gitara Moroso died. Tamra Ospenya summons all Accepted including Tarna to the Oval Lecture Hall where she announces a bounty for women who recently gave birth. (NS,Ch3)
The Accepted including Tarna scramble back to their rooms and prepare to leave the White Tower to take the census. (NS,Ch4)
Tarna is so terrified by what she saw in Salidar that she nearly rides her horse to death hurrying to Tar Valon. In Murandy she encounters a recruiting party of Asha'man. (CoT,Ch22)