IDK what you mean by sage, but you've got it backwards. Everything she did was Evil, which is what formed my opinion. There are plenty of unlikeable characters. There are plenty who do things of which I disapprove. Egwene is so consistently and thoroughly devoid of redeeming value, that I HAD to come to this conclusion, by virtue of the facts.

If it makes you feel any better, I have a theory that it's not entirely her fault. She got corrupted by Fain in the dungeons of Fal Dara during her myriad illicit visits. Fain later notes that he touched both Elaida and Pedron Niall with his Shadar Logoth powers, stating something like "They might trust their own mothers, but never al'Thor," in summing up the effect. Egwene herself describes the deterioration of everyone else who is exposed to Fain for a prolonged period in that time and place, including his fellow prisoners and the guards, who started out as heroes, and ended up going with Fain when he got out. What are the odds that a helpless girl like her would NOT have been affected? It would also explain her consistent suspicion and inability to trust him. It would explain how her memories of incidents that occur in the books redound much more negatively than the reality. There is no way you can read Rand's reaction to Elaida's & Alviarin's letters as gloating, but that's how Egwene recalls it a couple books later. In between, she refuses to accept that Rand wants nothing to do with Elaida or her embassy and has no intention of going with them, and keeps making utterly useless efforts to persuade or manipulate him into not going along with the Tower. She so desperate to keep him from going back to Tar Valon with Coiren that she tries to make him antagonize them into storming off in a snit before they can persuade him. Anyone who knows ANYTHING about Aes Sedai knows how absurd that idea is, that sisters on a mission for the Tower to corral the most important person in the history of the world could be dissuaded from continuing their mission over matters of ego & slights to their pride (had Rand actually infuriated the sisters to the degree that Egwene hoped, the only effect it would have would be the payback they'd dish out once he was in their clutches). Even Egwene could not be so colossally ignorant as to believe they would quit so readily, unless something is making her think the worst of Rand, making her despair of keeping from kneeling to Elaida that she clutches at the equivalent of Asmodean's metaphorical tuft of grass.

And best of all, this theory fits neatly with my Egwene-as-Gollum analogy. Just as Gollum could not forsake the Ring, even if he had wanted to, so Egwene was beyond trusting Rand. In each case, a corrupting power had put its hooks in the character beyond any practical resistance.