Tarna is a quite strong Aes Sedai; she is strong enough and able to open alone a gateway to travel.
When she was taken to the White Tower, Tarna was unable to touch saidar unless she had her eyes closed, and therefore was effectively unable to channel. Galina Casban helped her overcome that by beating her until she overcame her block.
She refused Galina's advances to be pillow friends once she attained the shawl. Upon being made Aes Sedai, she chose the Red Ajah.
To Salidar Edit
Years later, after the Tower split, Tarna was made an emissary by Elaida do Avriny a'Roihan and sent to Salidar to meet with the rebel Aes Sedai there. Once there she relays Elaida's message and is told by the Little Tower that they need time to consider the 'offer'. Before leaving she meets with Elayne Trakand and Nynaeve al'Meara, trying to get them to return to the White Tower with her but they refuse.
Back to the Tower Edit
Scared by what she sees in Salidar, Tarna sends a report back to Elaida and makes haste for the Tower. She arrives in Dorlan and takes command of the Aes Sedai who escaped the Battle of Dumai's Wells that are there. She is soon replaced by Katerine Alruddin. She has to sneak back into the White Tower with Katerine due to the rebel Aes Sedai siege of Tar Valon.
When she arrives she is ordered to keep quiet about the Battle of Dumai's Wells and is elected by the Hall of the Tower to be made the new Keeper of the Chronicles when Alviarin Freidhen cannot be found. Tarna meets Pevara Tazanovni in secret and they discuss the White Tower/Black Tower situations and that they must approach the Asha'man.
She is present when Beonin Marinye arrives back in the White Tower and meets with Elaida. She is one of the few that Elaida trusts, and is allowed to learn the new weaves Beonin picked up from the rebel Aes Sedai. Tarna meets with Elaida to update her on current events with what the Ajah Heads have decided to pass on. She informs Elaida of Egwene al'Vere's regular meetings with Silviana Brehon stating she must be near breaking point now.
Tarna was one of the Red sisters, along with Pevara, Javindhra Doraille, Jezrail, Melare, and Desala Nevanche, sent to the Black Tower to put the proposition of Red sisters bonding Asha'man as Warders to Mazrim Taim. He has agreed to this.
With the raising of Silviana Brehon, Tarna Feir is no longer the Keeper of the Chronicles.
Unexplained change in personalityEdit
Pevara and Tarna share a room at the Black Tower, and both have grown increasingly dissatisfied with their lack of progress. Tarna, in particular, itches to escape the Black Tower, until suddenly she disappears briefly and then no longer seems to feel any need to leave. She, like Asha'man Mezar Kurin, have suddenly changed from antagonistic towards Taim to seemingly supportive while at the same time appearing to those who know them to be in some way dead inside. Her eyes appear cold, worse than her usual distant look. Her smile looks like one "on the lips of a corpse." Pevara thinks, "Something is very, very wrong here." These are tell-tell signs that Tarna and the men were turned to the Shadow by the Turning technique.