She is plump. (TSR,Ch47) A slightly plump woman, she had somehow never really managed the outward calm of Aes Sedai; there was often a strain of anxiety around her eyes. (TFoH,Prologue) She has light hair and is faintly plump. (TGS,Ch24)
Shemerin escapes from Tar Valon through a secret waterway to the river. She hides in the nearby villages until the rebel army arrives, then joins them as a camp follower. (TGS,Ch26)
Gawyn and Bryne discover Shemerin hiding in the rebel army camp. (TGS,Ch24)
Shemerin freely answers questions and tells the rebel Aes Sedai about the river entrance. (TGS,Ch26)