Sounds like you and the kids had a great day skating. The fresh air and exercise are good for all of you.
As for your wife and the table. You did the right thing by stepping back and allowing her to figure out how to put it together. If she thought she needed your assistance, I think she would have asked you. Being independent is something she needs to do for herself right now.
As for projecting on to you about her being stupid...I think you handled it quite well.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
