Just bought a 599, however, the rider (my wife) is a measly 130 pounds. This is sprung too heavy for her, otherwise it's slightly tempting.
I honestly don't think you'd need it for your wife. I got all 210 lbs of my fat ass on it and took it through some twisties pretty quick. felt more composed than the 919 stock shock did. However, I'd be more than happy to test it thoroughly for you as I haven't ridden it yet
Interested in pranking your wife before you fly over? If so, text me