Natural Cures for Bloat in Dogs

I'm not seeing anything on Bloat (Gastric Dilatation and Volvulus) in Dogs. Sadly, in my case, it's too late, but if it could help someone else, it should definitely be on here. I fed my 12 yr. old dog a very expensive and well-known all natural dog food and within 3 hours I had to put her down. She got bloat so bad that she could barely move. The vet was not helpful in the least and within 15 minutes of arriving, told us that it would be best to put her down. It was a complete shock to us as she was the healthiest 12 yr. old dog I've ever known. She had been on a raw diet for about a year and it was working wonders. We heard that this natural kibble was excellent food, so thought we'd try to start incorporating it into her diet slowly, thinking it might be a less expensive way to go since we had two 60 lb. dogs. We got the food from my brother, whose dog had died about a week or two before. We never thought it could have been the food that caused his death, but it must have been because his dog had similar symptoms, but lasted a little longer than my dog. He was 7 yrs. old. The same vet that put him down (and my girl) said that he might have had cancer, but it was never confirmed. We will never go back to kibble EVER again. I stick by the raw diet 100%. I think that, had I never tried that food, my dog would still be alive.