Can you put on a rubber glove and poke a finger inside her vent 1 inch or so to feel for a stuck egg? Make sure that she is eating some crushed oyster shell or crushed egg shells for extra calcium which should strengthen the shells. Broken eggs inside her can lead to egg yolk peritonitis, and internal laying can also be common. Make sure that she is eating and drinking, and look at what her droppings are doing.
If it is a stuck soft shelled egg how do we go about removing it? She's eating and drinking this morning, poop is normal. Last night she escaped her pen and the backyard and we found her in the coop with the others, so she's ded got some spunk. Would it be worth it to give her Duramycin, in case she's got something else going on?
When my have a stuck soft egg I tube fluids to them, give calcium and place them in a bathroom full of steam. I would not start on Duramycin.
Best to offer oyster shell in a dish next to their lay crumbles or lay pellets. To give calcium to a hen with a stuck egg, I give liquid calcium gluconate orally, or sometimes I give them a human calcium pill orally.
Are you feeding layer feed or scratch?