She is tall and lanky with dark hair and brown eyes. She has a narrow face and a pointed nose. Her clothes are always neat and of a high quality.
Ashmanaille is not particularly strong in the One Power. Her level of strength is described by "The Wheel of Time Companion" as 22(10) which is a middle/high level in Aes Sedai hierarchy. This level of strength is just enough for her to open alone a suitable gateway to Travel.
She has a detached nature, seldom showing any emotion at all.
She thinks about clothes as much as anything else and is always well-dressed.
She is one of only nine Aes Sedai among the rebels able to make cuendillar due to her sufficient strength in Earth. She is, however, very slow at transforming iron to cuendillar, slower than Kairen Stang.
She and Phaedrine ask Beonin Marinye's advice about the murders of Anaiya and Kairen Stang. The discussion yields suspicions of a male channeler among the camp and advice to follow the connection of both sisters being Blue Ajah.