Brenda is right. Rhoda should mind her own business and not interfere between Brenda and Benny. Rhoda wouldn’t want Brenda to tell her how to treat Joe. And Rhoda is no expert on marriage!
Brenda just fell out of a scene from Little House On The Prairie. Amy Farrah Fowler from The Big Bang Theory would be thrilled. Personally, I find this whole episode slightly unsettling.