She is plumply pretty and more than twice Egwene's age. (LoC,Ch36) She is stout with a merry smile, in her mid thirties. (ACoS,Ch8) She is dark-haired, plump, pretty, and in her middle years. (TPoD,Ch16)
Chronology
When Egwene arrives in Salidar, Chesa is assigned to be her maid. The next morning Chesa helps her dress and puts pillows in her chair when she notes Egwene's bruises. (LoC,Ch36)
Chesa continues to put pillows on Egwene's chair even though she no longer needs them. (LoC,Ch39)
After Chesa serves her dinner, Egwene sends Chesa to her own small tent before sleeping. She plans to visit Tel'aran'rhiod. (LoC,Ch52)
Chesa listens to part of Egwene's conversation with Sheriam and Siuan then follows her when she goes from her study to Marigan's tent finding it empty. (ACoS,Ch8)
She tells Egwene her headaches come from too little sleep. (ACoS,Ch9)
After long arguments with the Hall, Chesa brings Egwene her dinner then helps her into her robe. The next morning she brings Egwene her breakfast. (CoT,Ch20)
Chesa brings meals to Egwene while she works. (CoT,Ch30)
Books 