Rant - overbearing mother in law

My mother-in-law is absolutely horrible. She is the most nosey person I know and she feels the need to demand we tell her what we are talking about overtime my husband and I are talking. My husband and I took a trip to a zoo and the zoo wasn't that good so we were going to go to a way better zoo. He told his mom that him and I were going to take a romantic trip out of town just the two of us. When we got home she informed us that she decided that she was going to go with us. If that wasn't bad enough she invited 5 other people plus her husband. She doesn't have room in her van for everyone she invited so she told us that 2 of her guests would have to ride with us.

Every time we get mail she either has us stand in the living room to open it and she demands to know what it is or she follows us in our room and either sits there and demands to know what it is or will actually rifle through and look at it herself!

I HATE HER SO MUCH!!!!