Drink more water and take an essential oils supplement that has evening primrose, borage and flaxseed oils. Very effective.
Shower every day and apply a non greasy, non-fragrance lotion of her choice. Many doctors will tell you not to shower every day...however, I suffered with eczema my entire life until I was 18. At that point I took control over my own health and began showering daily and applying lubriderm lotion religiously. Instant relief...I've rarely had a problem since.
Best of luck.