Agree with the OP. Githyanki or not, Lawful Evil alignment or not, there is a basic code of behavior in relation to people from whom you want things. Making her outrightly dismissive of all others with the constant superiority complex is just lazy writing. It's not how one would behave in her situation. She is not in her planar environment. She is the outsider and dependent on the player with whom she shares a common direction.
Example of proper approach would be to have her start out that way perhaps, sure. But she should undergo change due to relying on others who are in their environment, those upon whom she is dependent. Not only is this type of thing basic character development but it is also the truth of how things are and would be in that situation.
The female characters just seem to be written defensively overall. Lae'zel being confident and going after what she wants would be in character, which includes modifying her behavior to finish her mission with support.
Same with Shadowheart. She is supposed to be a deceptive dark cleric. One would think she is manipulative with windows for the player to maybe perceive she is trying to use them. But instead she's transparent and sulky like a teenager. I mean in most conversations with her no matter what one says the responses are almost childlike. She lacks depth in that way.
I realize it's easy to critique writing. And I realize there is much more to come from them. Just observing from the window of what we have seen so far it feels like some of the characters could use some quality control to ensure they're on whatever the storyline objectives are for them.
