I wish I could be more help! We were very new owners at the time and did not really know what to make of it. We just watched her really closely, offered her scrambled eggs to make sure she was eating enough, and gave some electrolytes in her water. She fought through it all on her own, she was acting lethargic for a couple of days before she started acting more like herself again. Just keep an eye on her and see how she’s doing- if it gets worse antibiotics may be a good option but I wouldn’t be able to tell you which antibiotic would be most effective. From what I remember reading online about the causes of lash eggs there can be bacterial salpingitis and viral, so we think our hen must have had the viral kind and it just had to run its course. I’m sure there might some other causes as well.
I pray the best for your hen, and hope she makes a full recovery! Let us know how it goes