This is your wife? Wow, lucky you

She'll save you a lot of time and hassle on finding models
Clearly my eyes are going, but I see no warts at all in the warts-and-all version - she looks great from here!
The second set you posted are much better than the first, they're really quite good in fact. Your wife either has quite a bit of practice, or is a natural at posing.
As it's been said it all comes down to lighting rather than exposure in creating the look. Shadows aside, even in the second set which is better your background is much too powerfully lit and it's bleeding onto her quite a bit - esp noticeable around the arms.
Seems like you're trying to get that background as burnt out as possible straight out of camera. Don't.
Get it so it's just starting to burn out in the hot-spots. It's easy enough to go over it with the dodge tool and bring it up to white in post if it's not quite white enough all over and you'll get much less spill onto your wife.
If i had to guess, I'd say you want to expose her about 1 stop brighter, and your background about a stop or so darker.
She seems very much lit by the background in the raw you posted. Also, if your diagram is accurate, your key light is almost behind her, rather than in front...
btw, the 'bed-head' that charlie pulled out as being good.. love it!! :thumbup: