I'd personally go with Chanel shades over Dior. There's these pink Chanel ones that I want with the little C's on the side. But, we're talking about what she wants....
Here's an idea. Bring her to a nice spa (maybe go back to West Palm or Miami...there's nicer ones there) and just spend the day together. Then, take her shopping at some nice SoFl mall. Hang out at the beach for a little while. And then take her somewhere nice for dinner. I think she'd like the idea of going back to South Florida for the day and just hanging out at all the nice places. I can definitely see her going for that.
(yes, GCers, I know Lady Cashmoney)