If you can get human calcium citrate with vitamin D or other calcium supplement, that might help if she has another egg coming. Give one daily until she is doing better. It is common for 2 eggs to be close together if one has been stuck. Why do you suspect vent gleet? What do her droppings look...
A picture of her might be helpful. Can you insert a clean finger into her vet about two inches to feel for an egg? Human calcium with vitamin D 3 tablet or Tums can be given orally right into the beak if you think she is egg bound. Is her tail up or down?