The detox won't hurt her either way. If when you feel below her vent, between the legs she feels bloated, then I would try it. You can compare with a healthy bird if you aren't sure. It helps some birds, and may not all of them, it just depends on what any underlying condition actually is. And that can often be hard to know for sure until necropsy, symptoms can be very similar. The detox is all herbal and is very safe. You give it orally with a syringe directly into the beak. Give it 1/2 ml at a time and let her swallow. This article explains how to safely give oral medications, if you have not done it before. It isn't hard, just take your time.
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/When treating for lice/mites you do have to treat both the birds and the coop. Lice tend to stay more on the birds but eggs can be spread to bedding on shed feathers and feather dust, mites really can take over the coop, but eggs can continue to hatch in bedding and nesting material. So you need to clean out all bedding and nesting material and dispose of it (burn it if you can safely), and treat the coop getting into all nooks and crannies. A spray is more effective in the coop, for the birds you can use either a spray, or a poultry dust if it's cold where you are so that the birds are not wet and don't get chilled. Most recommendations are to do the treatments at least 3 times at weekly intervals to get any eggs that continue to hatch. Unless you use the more expensive Elector PSP, in which case one treatment is often enough. Most people use permethrin products since they are much less expensive and usually available locally. The link I gave you before, on lice/mites explains it pretty well. Most Tractor Supplies and feed stores carry permethrin sprays, some are concentrated and you dilute with water according to the label directions before use, some are ready to spray. They will be in the horse/livestock sections. Permethrin is toxic to cats, so if you have cats be aware of that.
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/When treating for lice/mites you do have to treat both the birds and the coop. Lice tend to stay more on the birds but eggs can be spread to bedding on shed feathers and feather dust, mites really can take over the coop, but eggs can continue to hatch in bedding and nesting material. So you need to clean out all bedding and nesting material and dispose of it (burn it if you can safely), and treat the coop getting into all nooks and crannies. A spray is more effective in the coop, for the birds you can use either a spray, or a poultry dust if it's cold where you are so that the birds are not wet and don't get chilled. Most recommendations are to do the treatments at least 3 times at weekly intervals to get any eggs that continue to hatch. Unless you use the more expensive Elector PSP, in which case one treatment is often enough. Most people use permethrin products since they are much less expensive and usually available locally. The link I gave you before, on lice/mites explains it pretty well. Most Tractor Supplies and feed stores carry permethrin sprays, some are concentrated and you dilute with water according to the label directions before use, some are ready to spray. They will be in the horse/livestock sections. Permethrin is toxic to cats, so if you have cats be aware of that.