I do not agree with that tatic at all. If this was a WAW in an EA/PA....then I would agree. I see her as a young wife & mother who is overwelmed with all that she has to do every single day. It has taken a toll on her physically and emotionally.
She needs to see your support.....not distanting yourself. She feels that you are not helping her enough. You are gone to business meetings, dinner parties or whatever and she feels stuck and alone up to her chin in diapers and dirty dishes.
I agree whole-heartedly with Sandi here. Your W may not be able to see everything you are doing right now. But pulling away will not make her see how you were helping before. It will just her enforce negative emotions of you.
Things are hard right now. But this is the time to man up and be the best father, best husband, best person you can be. As Sandi said, she is very likely sick and overwhelmed. I would treat it as such.
She needs emotional support. If she does not get it from her H, where should she go to get it?