Perhaps in your situation it isn't about going dark or not. It's more about what you do with the time/contact you do have with her. Sometimes we gotta understand that they aren't going to open up about things. It's hard but I suggest that maybe you think about the fact she may never do that and focus on other things. Respect her space, take care of actual business and other than that, every once in a while just let her know that you're still there.
The good thing is that she's called you twice for whatever reason. There are people here who would love that from their SO.
It also helps to understand that when you've been around someone long enough, a sigh, an inflection, a glance - speaks volumes. So we may convince ourselves we've backed off and in reality we're still pressuring hard with the slightest of effort. That's part of the dance that needs to be broken.
Remember, it's about actions, not words. Observe yourself and her and take notes if it helps. Good luck in your continued journey
