Fiancée > hand-brake.
My first fiancée didn't pull the handbrake on hard enough and my 1600ti rolled down a hill into my parents garage -- smash. 2 days before we were going on a road trip to Mazatlan together. Bought BMW #2 (another 1600, had 75k miles on it) and had a pretty good trip.
Tell you what I don't like -- the weensie little e-handbrake lever on the new Z.
So why didn't your fiancée cell phone you if she thought something wasn't right?