[Hey, instead of talking about him and how useful he was or wasn't, let's focus on this Weave thing. Since Kaede actually knows what it is, maybe he can make some sense of one of the things he was completely unable to understand while he was underneath Thay.]

N-no, I don't think she's a god...just a very powerful dark sorceress. [She certainly has the evil cackle down, plus all the creepy purple energies.] But she said that she drank from "the Wellspring of Magic" and became one with it. And that's why killing her will destroy the Weave...

[And now it makes sense. If the Weave is where magic comes from, if it's something that's everywhere...now he understands just how dire the consequences are. Why she was using that as a threat.]