And of course another is to leave DD with in laws, email WS and update him of that and then go out...

he WILL ask where yo're going...

You just IGNORE that text message ... ignore it all NIGHT LONG

Pick DD up in the morning from in laws again...

Your H will be sweating bullets wondering where you went and what you did...

Just hang out with his sister for the night... hang otu someplace with a family member who can verify this later...b ut right now leave him out of hte loop on where you went or what you were doing...