I'm sorry she is not doing well. In the video she is having a hard time breathing.
When was the last time she laid an egg?
Does she have any swelling/bloat or feeling of fluid in the abdomen?
Is she crop emptying completely overnight?
You mention the poops smells like sulfur/rotten eggs - the color of it reminds me of egg too. She may have an infection - if the vet can see her again, that is best, but I'm inclined to think that your hen is suffering from reproductive/internal laying disorder like Egg Yolk Peritonitis, cancer, tumors, Ascites or Salpingitis. Symptoms include weight loss, swollen abdomen that may be filled with fluid, loose droppings that look like egg, difficulty walking (lameness), lethargy, slow crop and difficulty breathing.
If the abdomen has fluid build up, sometimes draining it can make them more comfortable and it makes breathing easier, but this is a short term fix. Antibiotics can also help as a form of supportive care.
Do what you can to keep her hydrated and let us know how she is.
When was the last time she laid an egg?
Does she have any swelling/bloat or feeling of fluid in the abdomen?
Is she crop emptying completely overnight?
You mention the poops smells like sulfur/rotten eggs - the color of it reminds me of egg too. She may have an infection - if the vet can see her again, that is best, but I'm inclined to think that your hen is suffering from reproductive/internal laying disorder like Egg Yolk Peritonitis, cancer, tumors, Ascites or Salpingitis. Symptoms include weight loss, swollen abdomen that may be filled with fluid, loose droppings that look like egg, difficulty walking (lameness), lethargy, slow crop and difficulty breathing.
If the abdomen has fluid build up, sometimes draining it can make them more comfortable and it makes breathing easier, but this is a short term fix. Antibiotics can also help as a form of supportive care.
Do what you can to keep her hydrated and let us know how she is.