Katerine
Chapter 37 - Darkness in the Tower
Mesaana
Interrogates Katerine about the missing dreamspike, realizes she is trapped by it, and orders forces to capture Egwene al'Vere.
Chapter 38 - Wounds
Mesaana / Katerine
Disguised as Katerine, she places an a'dam on Egwene's neck and attempts to dominate her mind in Tel'aran'rhiod. Her will is broken by Egwene's resistance, leaving her catatonic and drooling.
Chapter 42 - Stronger than Blood
Mesaana
Found babbling and having soiled herself after Egwene breaks her mind, she had been impersonating Danelle of the Brown Ajah within the Tower.