My hands had done the same thing when I was working with foods and I had to wash my hands a lot. I was severely allergic to the soap that we had to use and I ended up having to use $200 worth of medication on my hands for one night to clear it up. I suggest that she take some vacation time and just let her hands heal. She needs to put lotion on them and let just keep putting it on them. Bag Balm is another good thing to use as well. But the key thing is to continuously put it on so that the hands can soak it in. It may take a while to get them to heal but it should work.