Just got your message now, I am on a new thread now as this one is almost finished. When we separated my H did the same thing. He was never much of a talker anyway so it didn't really feel much different for me.
We communicated mostly through brief text messages or brief phone calls, mostly about arranging to pick up the kids. I tried to keep up my PMA when he was around and just keep things light.
It was more me that limited our interactions. I felt the need to be far from him to give myself closure I guess. I seemed to be the one to act that way, to limit our interactions. I didn't want him coming around the house without calling first. I also felt uneasy about everything and I didn't want to see him.
He wasn't telling people that he was done. He was mostly keeping quiet about it all. I urged him to tell people because it felt strange to me that no one knew. Looking back now I wished we wouldn't have told people right away.
To me it sounds like your wife needs some space. I would just give her the space she needs for the time being. Keep up your PMA and keep focusing on yourself and your children.
-cp
M: 8 yrs T:14 Twins:7 S:5 BD:'NLILWY': Feb/2013 Mar/Apr/May: MC June: "living in limbo" Sept 12: H moves out Oct 20: reconciling Jan-Feb 2014:MC Feb 2014: separating, and H moved out.