That's the exact same board and bindings my buddys wife has. It's a great set up, reliable pop, forgiving landings. Correct me if i'm wrong, but I don't think they've ever really changed the shape of the essence. My wife uses an 01 essence(same shape). She loves it.
however, if you need your wife to be a reliable 3rd, you might wanna get her some really nice and shiny new gear. if she likes how she looks in it, she'll be that much more interested in coming out to ride.