Pretty much the only real way you're going to see if the CGD is being eaten is the old, "What goes in, must come out." As others have said, it is really, really, really, hard to tell if a young crestie is eating from what is left in the food bowl. I'd cut back the crickets to once a week (still a more than enough to promote fast growth and even then maybe more like 3 crickets not 5) and see what "comes out." Droppings from CGD will be less in volume because more of it is digested and absorbed by her, so you can start to get a feel for what is from the crickets and from the diet that way too.

PS If you are concerned that she's becoming a cricket addict, there is the old trick of dusting the crickets with dry CGD to get her to connect the two and then see CGD as food. Good luck!