With all the other characters, I can point out their flaws and conflicts. Those things are such big parts of their characters.
Gale, Lae'zel, Shadowheart, Wyll, Astarion, even Karlach. Same with Minthara and--to a much lesser extent--even Halsin.
But not Jaheira. She's treated as if she's harsh and distant, but essentially good. That harshness doesn't necessarily come across as a flaw. Rather it seems as if it's representing what a "strong" woman Jaheira. The sense that she has that right as a legend, and besides, everyone knows she's good at heart and trust in her core intent. Distant with her children, but bonded with them all the same. Adopted children, no less, further pointing out her essential goodness.
The more I think about it, the more I start to think that all the other characters are... better. Better written. More fleshed out, deeper with more dimension.
Jaheira stands out to me more as a symbol than a character.
*
All of that said, maybe I'm just missing something about her.
I think, the problem is, that she is a continued character from the first two games. There she had a lot of struggles: kids of a dear friend, keeping his ward alive, loss of her husband, betrayal among the harpers, essentially fighting a god in the end. She is very well written, if you come from the first two games and know her story, it might be different, if you encounter her here the first time ( she is still badass though).
Larian just skipped the "What happened before part" mostly, especially, if you don't have Karlach with you, who gives you an info dump about Jaheira and what happened in the first two games. So I guess long time fans like me might appreciate her a bit more. Still she has much more going on for herself, than the other druid companion, Halsin, especially in act 3.
