Hi Tron...i was "preganant like" with extra skin after losing 40 lbs. last year, i was thinking tt, but after a year, my skin recovered nicely. THANK GODNESS. Therefore, I would give it a little more time before the tt. My gf had a tummy tuck...after having 3....she's a distance runner, very lean but the tummy skin just couldn't recover. She had a tt about a year ago, if happy even with the scar that goes from hip bone to hip bone. It does depend on her skin elasticy.
BTW...you should be PROUD of wife. and your wife should be VERY PROUD of HERSELF

It is rare but encouraging for other ladies to hear that it can be done with some effort and discipline. Be willing to bet that she is so much happier now!!!!