If she likes hummus, and dislikes garbanzo beans, maybe it's a texture issue more than a flavor issue. So maybe other bean purees, or pureed bean or lentil soups might be worth a try.
Alternatives to peanut butter--maybe Delia could make cashew butter (http://www.foodnetwork.com/food/recipes/recipe/0,1977,FOOD_9936_24830,00.html). I haven't tried that particular recipe, but I've had cashew butter and found it to be fairly mild. Also, some of the stores around where I live have been grinding chocolate chips with nuts to make chocolate nut butters. Adding some chocolate might relieve some of the peanut butter ennui.
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Alternatives to peanut butter--maybe Delia could make cashew butter (http://www.foodnetwork.com/food/recipes/recipe/0,1977,FOOD_9936_24830,00.html). I haven't tried that particular recipe, but I've had cashew butter and found it to be fairly mild. Also, some of the stores around where I live have been grinding chocolate chips with nuts to make chocolate nut butters. Adding some chocolate might relieve some of the peanut butter ennui.