1) Don't ask your vet about a raw food diet unless you are using a holistic vet. Do your own research, there is a mountain of info on the net.
2) If you are going to supplement her, at least use real food. Scrambled eggs. Cottage cheese. Canned fish like mackerel or salmon. Whole milk plain yoghurt, fresh ground meats, raw chicken gizzards, hearts, or livers are all excellent for putting on weight, she will love it, and it is good for her.
3) on keeping a sock on her foot: here is how: first, get vet wrap from your vet, and also get bitter apple or orange when you do. When you get ready to bandage her, you need 2 socks, and if it's wet outside, a ziplock baggie. If using the baggie, put it between the socks, and slip them on over the paw. Using the vet wrap, secure the sock above the paw. No bandaging or taping of the paw whatsoever, only the ankle above the paw. Careful not to wrap it too tightly either. Once you get it on, spray with the chewing deterrent spray. As soon as you are finished spraying the sock, spray a tiny bit on your finger, and wipe it in her mouth, as you tell her not to chew the sock. You only need to do this the first time or two, as she will already associate the scent with the bitter taste. Supervision to verbally correct her for paying any attention to the sock helps as well.