I don't know if she would be willing to speak after all of this if we even did.

The Council said that during the war, the Dakal attacked Nalanni's volcano first in an attempt to destroy it and it enraged her they would do such a thing so she lashed out. That doesn't excuse killing off the whole race. But, it explains a couple things, if true. And I don't know how this world works well enough to know if the Dakal are more of a threat to so-called goddesses than is let on.