Nubei Peldovni is an Aes Sedai of the White Ajah.
Strength
Covarla Baldene obtained command in Dorlan because she was the strongest of the group that escaped Dumai's Wells. Therefore, it is likely that Nubei's strength level is beneath 21(9), which is Covarla's level.
Activities
An Arafellin, Nubei sedai remained loyal during the Tower split. She was sent to Cairhien to kidnap Rand and escaped Dumai's Wells with Covarla Baldene. Along her she took refuge in Dorlan.
Particularity of this character
Nubei Peldovni is described only in The Wheel of Time Companion, she is never mentioned in the main books of The Wheel of Time.