The problem is you see going dark as a strategy a technique a gimmick you are using to get her to snap out of it. When nothing changes you want to do something it's called the "illusion of action". You feel you have to do something try something new to snap her out of it. It doesn't work that way. Going dark is for your own emotional being.
Giving her time and space to CHOOSE you is the only way it works out in the long run.
Until you accept the reality of your situation you will continue to suffer.