[@Stern Algorithm]
Just dropping my own two cents in on this, though I might be wrong.

I'd say that though what he offered might have been tempting, he caught her at a bad time in a bad mood. Not only that, but she's made a deal with Anu to promote war, which though laws and order could give rise to organized military governments, it would eventually end on peace treaties, which as much as I may or may not understand her motives, would in the end likely be counterproductive to the deal she made with Anu.

She wants order through chaos after all, not chaos caused by rigid order.