Sorry I'm late, but Wyorp Rock is correct. I would add that a very longtime breeder and NPIP tester for this state recommended to me to give tomato juice for impacted crop, probably the acid content is beneficial. He said it seems to really help and chickens seem to like it. You can get it unsalted. The coconut oil is really slippery and also seems to help.
At the age of this hen and her condition, all you really can do is make her comfortable. She is unfortunately at the end of her life and it has been a long one. I have had many live that long, but I've also had many hatchery birds and a handful of breeder stock types, including Orps, suffer from reproductive malfunctions and die from them. At the moment, I have two 14 yr old hens, one an Easter Egger and one a Splash Ameraucana. Both have severe arthritis at their age so most hens who live that long suffer from some old age issue, even if not reproductive. I used to drain hens, but unless they are literally dragging around a bowling ball between their legs, I no longer stress them by draining. It's just a judgement call as to whether it's worth doing at any given time. At their age, what you can do is just care for them and I really believe they get comfort from knowing you are trying to help. Mine seem to really cling to me when they are ailing. Your hen is lucky to have such a caring owner.
At the age of this hen and her condition, all you really can do is make her comfortable. She is unfortunately at the end of her life and it has been a long one. I have had many live that long, but I've also had many hatchery birds and a handful of breeder stock types, including Orps, suffer from reproductive malfunctions and die from them. At the moment, I have two 14 yr old hens, one an Easter Egger and one a Splash Ameraucana. Both have severe arthritis at their age so most hens who live that long suffer from some old age issue, even if not reproductive. I used to drain hens, but unless they are literally dragging around a bowling ball between their legs, I no longer stress them by draining. It's just a judgement call as to whether it's worth doing at any given time. At their age, what you can do is just care for them and I really believe they get comfort from knowing you are trying to help. Mine seem to really cling to me when they are ailing. Your hen is lucky to have such a caring owner.