Times where you felt Edith was in the wrong
For me, two instances come to mind. In the last episode, when she found out she had phlebitis, she doesn't tell Archie, and while I get she thought she was doing the right thing, it was still wrong.
In the one where she accepts the invitation to go to the Jeffersons' house for dinner without talking to Archie about it first, and then Mike and Gloria tell Edith to make him go with her instead of to the baseball game he planned to go to.
Any others?