Jesus men!!!!!!!!!
Anyway, honestly depending on your relationship and the time you are willing to commit, I think it's easily possible to get your wife totally fit. Very specific plan:
Tell her that you want to get fit together or just want to spend more time doing something active/enjoyable where/when you can talk together more and still be getting fit.
Today--walk 3 miles with her.
Tomorrow--walk 4 miles with her.
Tues--walk 5 miles with her.
Or whatever variation to get the mileage up to 5, walking. Eventually increasing to 6-8 on some days would be awesome but not necessary. A bike ride later in the day would also be awesome, depending on where you live and the weather.
After she is thoroughly accustomed to walking, throw in a few jogs, like 1 min run, 2 walk. Just a little to increase HR. But always at least 5 miles a day, 6 days a week. *Eventually* but not in the beginning (maybe after 1 or a few months), hopefully you can run some while she walks on her own initiative (starting together). My husband used to be a faster runner, but we still started/stopped every run together, and met in the middle near whatever turn around.
After walk/run, get home, HELP her cut a salad, lots of veggies, or stir-fry lots of veggies that you chop together, then top with sauteed lean protein or fish. Measure salad dressing. Opt out of processed foods as a family. Get involved with grocery shopping with her. Tell her you want to make healthier food choices as a family--make it about you and weight you want to gain/lose if possible. Or race you want to perform well in...but primary thing is time together to talk while also being active--just enjoyable time together.
Honestly some of my best times with my husband were during long runs and bike rides together. This can be togetherness time that you will both really enjoy if you try. Long bike rides on trails are AWESOME for this purpose. Ditto with long runs or hikes.