Pippit - try making a Goat's Milk soap using high Olive Oil (65%), Coconut Oil (20%), Castor Oil (5%), and Shea Butter at 10%.
The Goat's Milk is going to bring really soothing properties. If you can get your hands on oat flour, then I would recommend you add it otherwise you can grind oats with a mortar and pestle into a powder after running it through your food processor. As for fragrance, it you feel the need for fragrance, do it lightly, otherwise leave it unscented.....
How nice of you to want to help your friend....
ETA - Try a superfat of 7% with this for the moisturizing qualities.....