I have a theory that the Absolute is Lolth's proxy, or at least they are allies. I have argued in this post:
Probably allies but I bet she is using this as a test as well.
Minthara obviously does not know about this or about the tadpole. Although who knows, we'll see.
So don't rush to kill Minthara
It's not that simple with her.
Well I hope they change her dialogue so more of my characters would consider siding with her. As the player I find her interesting, currently there is not enough information given to imply her way is better.