I bought my boat in Brisbane and spent 6 months sailing it back to Perth with my wife who had very minimal experience and 2 boys 7 and 10 at the time with no boating experience. My wife was going to Brisbane anyway to visit her sister, so I sent her up to Newport to look at the boat first. It didn't matter how many of my 'boxes' the yacht ticked, if she didn't like it cosmetically it wasn't going to happen.
My first lesson on the way home would make any baked on traditionalist cringe. There are
NO sheets, halyards, painters, winches, jammers, bow, sterns, galleys, heads and so on on a boat... They are white ropes with blue flecks, white rope with red flecks, round silver thing over there, front of the boat, back of the boat, you get the idea. Once I came to that realisation everyone started enjoying themselves more... The family was learning and I wasn't frustrated with them not understanding.
Watermark is on the mark... Pick the right day. Its not about showing off your new found skill just yet. Show off your new found love instead... Sell the dream. A nice lunch and a bottle of wine (her favourite, not yours). I got the sale of a boat over the line by doing this last year. I knew the (reluctant) partner was coming along for the sea trial, so I put a bunch of flowers on the table, bought along a platter and a bottle of bubbles of which she got served just before slipping the pen. Boat sold before we got back

5 years on, my youngest boy will have a tantrum if I go sailing without him. At the age now of 12, he confidently helms a 47' yacht onto a mooring and with my guidance into a marina pen. My wife and eldest boy simply enjoy the outdoors on the water, the social aspect of sailing, the sundowners and a wine or 2 - or more. They enjoy every thing about the boat bar the actual sailing -oh and the maintenance.
Bottom line.. Don't force your love of your boat onto her. Don't expect her to become a reliable crew member. Make sailing enjoyable for what she sees it as and your wife will enjoy it more.