I’m fine with her wanting to keep it under wraps to begin with given she wants to insinuate herself into our good graces and the attitudes of many towards Shar worshippers, plus telling us would likely prompt questions about her top secret mission that she doesn’t want to answer. But from memory I agree that the responses we have when she tells us aren’t entirely satisfactory. Eg, IIRC my Lolth-sworn ranger made a comment to the effect that lots of people distrust or dislike Shar worshippers and she reacted as though I was objecting to the fact the religion was evil. As a Lolth worshipper that was very not much my problem with Shar!