I have a 4 year old hen who has been very weak for over a month now, sitting down every few steps, tail down, putting wing down to stabilize herself. She is very thin but still eating and drinking. I took her to a vet and paid $250 for exam + blood tests + medicines (antibiotic and calcium supplement) and mite treatments. I supplement their feed with mealworms and calcium already. After 14 days of 2x/day meds, she is showing no improvement. Vet tells me next step is x-ray ($80) although he already checked for eggs in her canal and confirmed nothing in there and she's unlikely to be laying, so if he found something else it would require more expensive treatment. We have several other pets including an elderly dog who is requiring hundreds of dollars of monthly medications and regular vet visits, blood tests, therapy and simply can't afford to be spending more money on this hen, but I feel terrible that she is suffering. Can anyone help with advice on what to do in this situation?