Ian hit the nail on the head. Blah, blah, blah. It is so a control thing. Don't start grinding your gears over those comments. Those are par for the course. Don't let that rattle you. Be the ROCK! She will continue to test you. By now you know what this game is all about. The harder you hold on, the harder things get.
Your right this is a marathon. You be that faithful farmer so to speak. The seeds that you plant today will be harvested in the future. MLC'ers are on a totally different time clock man.
You are doing very well my friend, I'm with Ian, I would wait on going dark or dim. Just keep doing the two step, and remember this is normal. You can do this. Instead of going dark just show her that happiness inside of you and show her that you intend to live life to it's fullest no matter what. Try to stay busy, I know it's tough, but keep working and improving you and most importantly stay positive and try to do things you enjoy that take your mind off all this. I'm starting to see a yin yang of sorts to this. It's almost like the more one spouse worries and stresses the less the other does.
Patience, God is working on the two of you. Always keep that in mind. No pressure on her or you, keep moving forward one step at a time and know God is taking care of everything. I'm praying for you partner.