In high school, I was dared to play "gay chicken", which is where two straight gals pretend to be gay and the first one to chicken out loses...
The other gal and I are really stubborn, and neither of us wanted to lose. We've been married 14 years and run a Ryokan in Kyoto with our adopted...
Alfred did prepped her beforehand by showing her some of the investments the Diamond company have made. As a result she could make an educated guess on the true nature of the man made diamond.