That's not all bad but if you have a past barometer to gauge things then that is probably the best approach on how to proceed with regards to the Mother-in-Law visiting.
If it's better after she leaves then maybe that is a solid sign of progress. At least it's happening at a good time with the holidays quickly approaching. I think it's probably best not acknowledging your anniversary.
I tried that approach with ours back in May, only to find out that she was upset that I did not get her anything after she told me there was nothing to celebrate. I got her a gift and a card that evening and left it at her door at the suggestion of a friend and she later threw that back in my face saying that I was not sincere about it. Can't win for trying sometimes.
Me: 42 WAW: 37 Kids: 0 Separated: 06APR13 M:7 Years, T:10 years WAW states she wants to "move on": 01JUL13 "Courage is the standing army of the soul which keeps it from conquest, pillage, & slavery."