Thanks so much ladies! You know, both are really beautiful. When I see an emerald cut, it makes me think of royalty. It has a certain sophisticated 'air' about it. My big beef with it is that it just has so little sparkle! Most 'real life' pics I see of them (as in, not taken in a studio or under ideal lighting conditions) just look 'blah'.
So, yeah, I think she should go with the cushion. Thanks for helping me filter through my thoughts!!