No, I'm not DF'd yet. I've only been "awake" to the full reality of the cult that I was raised in for about 8 months now (doesn't even feel like it's been that long). Until that point, I was essentially an atheist in spirit just going along with the JW thing on the off chance that they where right. I had a lot going on in my life so I didn't take the time to examine things. Right now I'm in the process of trying to slowly drift away (which is very difficult with my wife and her in-laws acting as a boat anchor) and wake my wife up. Still not sure how I'm going to work that out, and progress has been slow.
Skeeter has a good idea...you might start the process of waking up your wife by investigating the blood policy using your impending fatherhood as an excuse. Part of the excuse could easily be the incomprehensible allowance of some fractions and not others, and you want to make sure that she's educated and prepared on what you guys will accept for her or your child. In addition to the link skeeter gave, there's some good information on jwfacts that you could use, and a terriffic resource would be the thread (link below) that cofty started a while back on the topic.