JS, Another thought... have you tried asking her nicely what's going on. I mean a nice talk, like you feel a sad (or hurt) that she doesn't seem to want to spend time with you and seems uncomfortable talking to you. (Use your "I feel" statements.) Let her tell you if you're imagining things or she's mad or she's depressed or whatever the problem is. If she starts screaming at you then you'll know she's still not ready to work things through. If you can, get to the point of asking her if there's something that you can do to make things easier for her. You might even recommend going to therapy again, but only if she's ready.
I think it was my reaction to my H's silent treatment that pushed us toward going to T. I got sick of him clamming up everytime we had a disagreement, so I started pushing him to deal with me. Of course, I was at the point where I didn't care if he walked out and didn't come back. It wasn't terribly constructive, but it got the point across that I wasn't about to stay in the same house with him while he brooded in silence. We either had a resolution or a truce, but no silence. Later my T had a better idea. She recommended that we cease the argument and set a date to deal with it when we weren't angry anymore. We haven't had any real arguments since, but it seems like a good idea.
