I'm sure some of this will calm down and you can recondition her slowly once she trusts she will get food regularly and when her numbers come down a bit and she can make proper use of her food. Civvie Toki came to us as a kitten and she would eat furiously like her food was going to disappear from under her making a growling noise the whole time. It was obvious she was fed trough style and had to fight her littermates to get a full meal. She calmed down when she realized her food bowl was just for her and now she eats if she feels like and walks away if she doesn't, knowing the food will be there for her when she comes back.
Maybe you can give meals every 3 hours and tide her over with a few treats like boiled chicken or freeze dried chicken in between meals?