I know what you mean. That was a dilemma for me, too. I wanted it to be just our secret for a while. But my family is so sensitive. If you sneeze the wrong direction, they feel slighted...
Good luck with your move. I think that is so funny that your mom thinks 1/2 hour away is far. i've never lived closer that 21/2 hours from either of our parents. It's not so bad, really. No unannounced "just thought I'd stop by" visits.
