Hand the SIL a hammer (or some other construction implement) and have her give it a try. Most folks have no idea what it takes to build a complete structure from the ground up like you have Uncle Brettski.
Oh BTW from now on you're Uncle Brettski to me.
JHAP ~~~~~~~~~~ "My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives." ...Hedley Lamarr (that's Hedley not Hedy)