Karlach: After getting to know her more I found her very irritating with how she likes to judge everything and everyone except herself.
What makes her seem judgmental to you?
The long and short of it is "Karlach disapproves". For context my Tav's alignment are True Neutral so they take decisions based on what is best for the group or the realm, not what is considered Good or Evil. I would maybe have had some specific dialouge examples, but it's been over a year (time flies, huh?) since she was active in my party. Now I don't pick her up or leave her in camp.
I can imagine she is a perfect fit for a good align Tav though.
