Okay, thank you for sharing your journey. You have touched on every single important point about weight loss surgery and recovery from it except one: what are you doing about your eating disorder?
People don't go through this and then eat their way back to where they started unless there is something gnawing at them, trying to undermine their success, telling them they need something they don't, or just plain lying to them about how they look and feel.
Those of us who have been through it know that if it was just a matter of snipping this and cutting that, everyone could eat piles of food and never gain any weight. The biggest, baddest, enemy that we face is our self-talk. You don't gain weight without having an eating disorder, and that doesn't mean you are anorexic or bulimic. That means there is something wrong with your brain's relationship to food.
Try reading books about weight loss and self-esteem. My favorite is called "the only diet there is." I'm not going to go back and capitalize every one of those words, but that doesn't mean the title isn't worth capitalizing. It is an excellent book and the basic theme is to help you realize you are a goddess, metaphorically speaking. There are exercises you do with pen and paper and there is a lot of really positive stuff in there you can put in your brain. I recommend it highly and look forward to your participation in our group.