I don't think going dark would help too much. I would not be the one to initiate contact, but I would not completely ignore her calls/texts etc.
If you read the other sitch's here, many MLCer's do not follow through.
What you might try is to show your W that you will get on with your life regardless of a D or not. Keep a PMA and show her happiness/contentment whenever you interact. It will be the opposite of what she will expect.
