DD also has fine curls and I use a combination of shampooing minimally, conditioner about every 3 days or so and these 2 products. I use them when her hair is still wet and before I brush so it gets the product in nicely. A little bit goes a long way with both of them.
I have fine, curly hair and I generally find lightly foaming mousse works best. Currently I use Got2b kinkier. My absolute favorite is Ouidad amplifying foam, but it is pricey.