Who said you can't dust mealies? Mine dust perfectly fine. I just put a tad of calcium and vitamins in the bowl and shake it around a bit and everything is covered, and since the powder is in the bowl too, they get a good serving of it when they go to grab the mealies/waxies.

Mine like crickets occassionally, but are usually too darned lazy to go after them. If one walks in front of their faces, that's a different story. You can feed them pretty much anything, waxies are good for fattening them up, just like butterworms. You can wait for some of the mealies to turn into beetles, that's always fun Small lobster roaches, pretty much any insect as long as it's the right size. But anywho, I hope she gets big and fat for you, I know mine sure have LoL :-D