Newbie- Very Lost- Not Sure where to start

[tdb68]

Ok, took S13 away to the mountains for the weekend, and W stayed home with S12. We had a great time, called W once on Saturday to check on younger son and chatted for about 10 minutes. Called her when we were leaving to come yesterday, and again had a pleasant 10 minute "chat". But then when we got home, things got weird, wife was upstairs in bedroom (it was only 8pm) and never even came out to say hello to my son, until I went up looking for her. She was about as distant as I have ever seen her, just didn't seem to want anything to do with me?? Is she trying to "detach"? I am not sure how to handle this, don't want to "react", but don't even know how to act??? She is off today with my boys for Presidents Day holiday, so she will be home with them. What do I do? Just go work and avoid her all day and observe how she is tonight? Ups and downs are still getting to me... Not as bad as before, but still do..Don't want to make any mistakes, or cause any "negative" effects..