To be clear, I didn't mean my above post in a critical way. In boy scouts as a teenager, I spent many freezing nights in 40 degree weather, because I thought I knew better than some leader who had given me some tidbit of info like the ones I mentioned above. I just didn't know how big of a deal those small things were. I really believe winter camping is about managing those tiny little efficiencies in body heat. Even something as simple as changing from your "pretty dry" socks that you wore all day to perfectly dry and fresh socks right before bed can make a HUGE difference. Not a bad thing for someone who doesn't know that, that's why we all chat and share info in person or online.
Also, camping with my wife, I've found we both have our own unique sets of experiences, and there's things I thought everybody knew that she had never heard of, and vice versa. We were backpacking in the Glacier backcountry a few years ago, she was complaining about her pack being uncomfortable. I got her to take it off, and I found that every heavy item was packed in the top left hand corner of the pack, every single compression strap was loose, and her shoulder straps were adjusted so most of the weight was sitting on top of her shoulders. She's backpacked probably more than I have, but all on her own, and nobody ever sat down and showed her how to adjust a pack and distribute the weight.
She on the other hand, has given me quite a few tips for cold weather camping, keeping yourself clean and dry, and comfortable. I never heard of someone taking a baby wipes bath on a backpacking trip until I met her. Literally changed my life. All of this to say just because you're comfortable, it doesn't mean your wife will be. My wife and I sharing tips and teaching eachother from our own experiences has been an awesome part of outdoors stuff for me since we got married.