I would also agree that this looks to be salpingitis. Whilst the herbal recipe may help with the infection and certainly can't harm, it is not going to remove the mass of infected egg material/cheesy pus from her oviduct which is no doubt constricting her digestive tract. That said, if you are in the northern hemisphere ( you have not included your location in your profile page but it may be quite relevant) your hen will be moulting and her egg laying cycle will be coming to an end for the season. This means that her body will stop ovulating and that will prevent the problem from getting worse and may give her another 3-6 more months of life. Her body has probably already started to reabsorb some of the fluid from the infected mass which is why the swelling has reduced a bit. It is your call between giving her an antibiotic to control the infection which looks to have taken over her digestive tract, probably as a result of the slower passage of waste due to the constriction, or to treat with the herbs. I am not an expert on antibiotics but if you went that route, the vet could culture a faecal sample to establish which antibiotic would be appropriate to treat the digestive infection. The oviduct infection has probably self terminated by solidifying.... this is what chickens bodies do to puss to prevent the spread of infection..... but the blockage in the oviduct is a major issue and once she starts ovulating again in the spring (if she gets that far), it will eventually kill her as the eggs will back up inside her and you will see the swelling star to get much worse.
I'm sorry that this is not good news. Reproductive problems like this are very common in hens because their reproductive tract is so active.... making it more likely to break down before the chicken reaches old age.
I'm sorry that this is not good news. Reproductive problems like this are very common in hens because their reproductive tract is so active.... making it more likely to break down before the chicken reaches old age.