Hi Shojohn,
the holidays are always a potential trigger for drama . From the sounds of it your wife could not deal with her life as she perceived it (very acutely in that moment) and took off burning bridges in the wake :'(.
Right now communication is switched off which may be good as it allows some time to cool down and for you to look at communication tools. What is important is to
1) avoid invalidation (see 2)
2)
validate 3) express what needs to be expressed in a respectful and digestible manner (
SET)
4) last but not least: Take good care of yourself. You did not cause it and you have not 100% control how it develops. But you have 100% control over what you do right now to feel better today!
Any idea what she was struggling with the past months?

,
a0