Wife ready to walk away

[Miler]

Had a non-conflict night last night!! I came home extremely upbeat, and asked how everyone's day went. She answered and asked about mine. I played outside with the boys, played aboard game with them, and helped with homework. I offered to help with dinner, and I got no thanks with no eye contact. We all had dinner together, but she and I didn't communicate. I went and picked up my daughter from the gym, ran and got milk (without her asking because we were out), and put the kids down. When I came downstairs, she was folding clothes. I offered to help, but she said nope, I got it...so I told her good night and went to my room. Little things I noticed:

1) she did not make my plate of dinner, only hers and the kids.
2) she avoided eye contact at all costs
3) she answered any questions, but had short answers
4) she initiated one conversation about one of the boy's friends

***I must admit, I almost feel as though she is mad at me because I am not unhappy?!?!?

This morning, she was very icy and avoided eye contact. She gave one word answers for things like when I told everyone to have a good day. She happened to be walking back into the house from dropping off the kids as I was walking out to my ride. She actually smiled and I told her to have a great day...I didn't pay attention to whether she answered or not.

About 30 minutes into work, she texted me to tell me son's track meet was cancelled. She then texted to ask about some pictures that might be on my laptop. I answered very upbeat telling her I would look and send them to her. She texted back to tell me no hurry. I sent the pictures and told her there were some great shots in there. She immediately replied, Thank you.

What do we think? Am I going about this the right way?