UPDATE 1:30pm Just as I thought (and my lawyer predicted), my attempt to communicate with my wife via email fell on deaf ears, at least for now. My lawyer had told me that if I am serious about our son's welfare, I should first consider trying to convince my wife to go to external mediation, and even then my lawyer is feeling pretty doubtful my wife will go with it, considering how she's been shrugging/ignoring things.
At least, she and our son will be returning on Tuesday. I'm so excited to see him on Wednesday!