@tuatara1
Yep. MC knew that, but wanted to at least humor his wife's wishes. Plus, this now clearly defines her stance, and seperates her from the group. And from a political standpoint, she is doing the right thing with her pointless attempt. She IS the demon lord. In other words, now that everyone has intentionally disobeyed her command, she has enough reason to kill them all for insubordination, and possibly could streatch it to labeling them officially as a rebel group made up of rogue soldiers. That would give her political justification to execute all of them too in the name of national security.
Although, it isn't like she is looking for an excuse to slaughter them all. But now she has one, at least.