Heartbroken reminder that Egwene is 17 when she gets taken by the Seanchan, spends two months in captivity being tortured, used as a weapon and dehumanized. When she gets back to the Tower, she immediately passes a test that's not at all traumatic, nearly gets killed by a Grey Man and is sent on a secret mission to hunt murderers completely unsupervised. During this period of wandering, lacking direction, she naturally gets angrier and erratic, but Nyn and Elayne mostly treat it as childish rebellion against Nyn's authority, with Elayne slapping Egwene because she was mean to Nyn. When the girls eventually get captured because they are not equipped at all to hunt the Black Ajah, Egwene becomes so terrified of being taken again that she keeps on resisting the sisters long past it is sensible, earning a brutal beating from the sisters who throw her back into a cell, beaten to a pulp, with no hope for help this time.

Clearly, Egwene has no PTSD whatsoever.