Strength and AbilitiesEdit
Being a Sitter in the Hall for a while means that Talene is also a high-ranking sister and a strong channeller by Aes Sedai standards. Thus she has the strength needed to use the travel weave.
This is confirmed by "The Wheel of Time Companion" where her level of strength is described as 15(3).
Talene is 160 years old. She was born in 840 NE and grew up as the daughter of a farmer in Andor. She went to the White Tower in 855 NE and spent six years as a novice and six years as Accepted, being raised to the shawl in 867 NE.
She is described as being statuesque with golden hair. She has blue eyes and is beautiful, with a perfect oval face, full red lips, full-bosomed and round of hip.
She is exposed as Black Ajah by the Black Ajah Hunters when she refuses to reswear her Three Oaths on the Oath Rod. After being subjected to the Chair of Remorse several times, she is forced to renounce her oaths taken as Black Ajah and reswear the Three Oaths. She then betrays the other members of her heart, Galina Casban and Temaile Kinderode, as well as naming Atuan Larisett as Black Ajah. 
She is present when Elaida do Avriny a'Roihan grants the Sitters' requests to begin negotiations with the Salidar Aes Sedai. When Elaida asks Talene's opinion on negotiations, she looks to Yukiri and Doesine Alwain, two of the Hunters. Alviarin Freidhen had just returned to the White Tower to witness this exchange, which has started her following up on who is hunting the Black Ajah.
She is adamant that she walks in the Light again. She is called to a Black Ajah Supreme Council meeting, but is terrified of turning up as she is positive she will be killed there. Saerin Asnobar hides her in a room in the lower basement of the White Tower.
She flees the White Tower before the Battle of Tar Valon. Ultimately her fate is undisclosed. It is likely that she hid during the Last Battle or was found by the Shadow and killed. Because she failed to show up before the Supreme Council, she would be killed if found.