We're so happy that you've decided to join us
What's she currently eating. Please also include treats and quantities. Like @ChickNanny13 I suspect a vitamin deficiency.
We are glad you joined our flock.
Are you adding the DE or is it an ingredient in the feed? If you're adding it, I'd recommend not to. You'll definitely want to get her a vitamin supplement such as PolyVisol (no iron) or nutri-drench. In the meantime (not sure what you have in the pantry or freezer), I'd suggest a tablespoon of canned pink salmon with juice in the morning and evening. If you don't have salmon, then raw beef liver, or canned tuna in oil are also good. A little scrambled egg with it is also good. The salmon is loaded with key vitamins and will also provide a protein push while providing omega-3 fats. The egg has the perfect balance of amino acids for a chicken, which will help her absorb the vitamins. Best of luck.
It is wonderful to have you here with us, best wishes! 
