I think that going dark has to be up to you. But I also want to say that you do need to get to a point where you can say what is on your mind (albeit with respect...) and not worry about the repercussion. You should be able to say you are doing great, because you are. (I don't know about you, but every once in a while I feel a little guilty that MY growing and changing has come along so well, and the Stupid German is stuck...and yet two words come to mind...poetic justice ). It is their own self imposed limbo, and they have to deal with it. So enjoy the fact that you are doing great, and if she asks, you should tell her you are doing great. If she grumbles, don't let that take it away. Feel Great!!!!
I think we have all experienced the egg shell walk, and now that this is happening you can take a breath. Sometimes it is just living in the limbo that kills us. As Tom Petty says, the waiting is the hardest part.
Im still standin better than I ever did looking like a true survivor feeling like a little kid Im still standin after all this time and Im picking up the pieces of my life without you on my mind..