As an LLL leader, I was taught that it is an extremely small number of women who truly can't breastfeed, and extremely small number of babies who truly can't tolerate breastmilk. In your case, it appears that you fall into that extremely small percentage. I do still hope that it is salvageable, that the elimination will work!
One thing to consider...it might only be that her gut needs time to heal from the bombardment it was getting. So if you stay on the elimination diet for a while, keep her on the elemental formula, then perhaps start introducing your breastmilk very slowly (1oz BM, 3oz formula, for example) maybe she will tolerate it better. Inflammation is a cycle, once it starts, it's very hard to stop it. She might just need time to heal a little, then she may be able to tolerate your milk, and eventually even tolerate you having more foods in your diet.
Please be realistic with yourself, too. You can't live on chicken, turkey, and squash forever! Nutritionally and emotionally. And after the hellish time you've just had, your emotional health is just as important right now.
I had to cut dairy and soy for my second son, and there were moments when I was awake at night with a sick crying baby (he was very very sick as an infant with numerous birth defects) and I would be crying right along with him because I just wanted some <bleep>ing ice cream! I knew, logically, that ice cream wouldn't fix any of his problems, but it sure seemed like heaven's gates to me. It was like I couldn't handle stressing over his illness, so I stressed over my diet limitations instead. It was very hard. I remember sitting in the surgery waiting room when he was having surgery once, and I was trying to hide tears, and someone came up to me and asked if I needed any help. I politely said no, but inside I was screaming "you know what I want? I want to put some creamer in my coffee!!" It's very strange the things you fixate on when stress is overwhelming.
Please take advantage of this cry-free time to rest and bond with her, and also to pay attention to your husband and older child. You've all been through a lot.
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