Me [31M] with my wife [32F] of 12 years, in 2017 we agreed to mutually lose weight for a myriad of reasons. I lost over 120lbs she gained 20. She says she's no longer attracted to me and wants a divorce. Is this relationship beyond saving?

I'm sure this is a common subject on this Forum Section, but I figured I'd throw my own story in the mix and ask for advice. Using a throwaway because despite our problems, I do love my wife and I don't want to embarrass her.
So basically we married young, struggled through starting a business which caused both of us to sit long hours and essentially be sedentary. It seems like a blink of a eye and before we even knew it, we were both approaching 300lbs. As a couple we could barley walk the few steps from our car to our office. We didn't vacation, we didn't go for walks, we didn't do anything but stare at our phones when we went out to eat. We ate takeout 3 meals a day and were pretty miserable. Our sex life was at first uncomfortable, and then essentially non-existent. Her doctor told her that she essentially had the physical well being of someone in her 70s and she was only 31. That was January of last year. She came to me and proposed that we lose weight. I agreed.
She went to the gym, hired a trainer, went on a certain famous "meal point" plan and had pre-portioned food shipped to our house and business. I had suffered intense bullying in high school so I didn't really want to do the gym so I just walked, downloaded a calorie counting app and made sure I never exceeded my daily calorie limit.
Well slowly but surely, my weight started to come off. My wife on the other hand quit her gym and trainer after about a week, she ate maybe two days worth of the meals (they are still stacked up in our laundry room) and started to get intensely negative. I would ask her if she'd care to walk with me at lunch and after work but she always had an excuse as to why she couldn't. After about 5 month, I decided to try the gym and actually found it very welcoming and friendly, for the first time in my entire life I have muscle tone.
I lost about 10lbs a month and after 4 months, it really began to show. It was at this point that she became intensely hostile towards me. She started working from, she started making me sleep in the guest bed (she claimed it was because of my snoring). We communicated through email and texts and even those were hostile. She started posting things on facebook about "losing the genetic lottery" when it came to weight and it was best that she just learn to love who she was. A favorite quote that became her facebook backdrop was "change your world, not your body." She started going out with new friends and would stay gone most weekends, when she was home she watched Netflix in her living room and we'd only talk to make uber eats plans.
Throughout all of this, I always held out hope that she would see the light and at least start communicating with me again. About an hour or so ago she sent me a text that said:
"I'm sorry to do this to you, but I am deeply un-attracted to both your new body and your new attitude. I never thought you would remind me of my bullies but that's exactly what you've become. I'm contacting a divorce lawyer on Monday morning. [brother and friend] will be by on Tuesday to get my things, please for our sake don't be there."
Despite all of the above, I do love my wife and I wouldn't even care if she didn't lose the weight. We have a life together, including a home we own outright, a business that depends on both of us and what I'd hoped would be a future together.
Is there any reason to fight for this marriage after that text? Is she telling me in so many words; "don't fight, I'm gone."

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tl;dr: wife wants a divorce after I lost weight and she didn't. Is this marriage worth fighting for?


Source.