Oh my goodness, the poor thing!
You probably already know this, but this very likely isn't a sleeping and eating problem; it's more of a stress problem. I assume since she's with you, and since she gets so violent, that there is probably trauma or neglect at play here more than anything. As much as it may be crazymaking for you, if she is used to actively being fed at those NW, might be best for the time being to continue that and use that time for lots & lots of cuddles, maybe some quiet songs. You've only had a week to counteract 15 months of her life, the details of which I can only guess at (I don't know how much information they give you), so a healthy dose of patience - the kind you'd need with a newborn, really - to go with the lots and lots of love, all the time, is called for here for sure.
As she feels more secure with you, she'll be more likely to settle better with things other than milk/food, but for the time being, easy does it.