I actually work for a human clinic, haha. I'm a Medical Technologist and work in the lab.
I don't think she's losing weight anymore at this point, now that I have a system down that works. I will weigh her this morning after her big morning poop to see where we're at. She mostly lost weight while I was feeding her pellets with tweezers because it was SO inefficient.
It's funny because everything you suggested are things that I have done over the course of the last two weeks through experimenting and trial/error . I think I have her it ironed out now, but I'll have to see how her morning poop looks, haha. I will try the mealworm thing, but so far she's just ignored everything I've put in front of her.
I just have to say, you are an amazing chicken mamma, and your dedication to this sweetie is amazing! Wishing you a very successful recovery!