Chaos didn't rush his wife, he knew she was analyzing all the information they had just gathered from her visions and was finding the best solution for them.
Diana then said to him : "The only acceptable solution is to let him believe that you weren't aware that Tanos was in this world, tell him that you thought he was killed in the war against the Gods and that you don't know anything about what he was doing in the world he was in.
And as soon as the opportunity arises, kill Tanos to stop him from talking. In my visions he was already badly injured and unconscious, I don't think he had revealed them anything but we can't take the risk so kill him and tell them that what you dislike the most is the deserters.
I guess he already knows that I joined the Titans at the end of the War so there's no point of hiding me, I'll stay by your side and help you deceive them.
