Waywardness is in the heart of the person. Ending the A and having NC with OM is just one step in the right direction. It's a big step, but it doesn't mend all of the waywardness that was already in her heart before the A.
At this time, resentment and disrespect are running high. Frankly, I am quite surprised she has gone this length of time without contacting OM, especially with things between you being so tense.
Getting through the withdrawals does not assure the resentment and disrespect will get any better, however, her mood may improve. There may not be much you can do about her holding on to resentments, but you can do something about the show of disrespect.
In the meantime, staying out of her way when she's obviously in a foul mood is probably the way to go.........only b/c you are giving her time and some space to deal with her internal struggles right now. And who knows, God may be convicting her, too. Just don't fall into that thing that nice-guys do, when they avoid things b/c it's easier. I am thinking your W is taking her anger of the A ending out on you. If it continues, I think you should not continue to avoid it. Address it.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!