You should not be engaging at all. I don't know if you are trying to get me annoyed beyond belief and that back peddling you are doing or if you are just that dense.
I don't want to hear "ugg", "cut her off", "its tough" or anything else that even remotely alludes to those phrases one more time.
You have a blackberry, computer and phone yet you HAD to IM your W about a lunch that had nothing to do with you because you wont SEE your D7 until Sunday. If you knew your W was going to lunch in place of the stoooopid grandma what exactly were you so anxious about? Nothing. You just wanted to contact your W when you easily could have waited a few hours and called D7 yourself.
Go to the corner and stand there until somebody says you can come out.