You may want to put a rubber glove on with lubricant, and insert a finger into the vent to feel for a stuck egg, or remnants of the soft-shelled egg. I would make sure she has some extra calcium in her diet, and keep crushed oyster shell available. If there is an egg stuck, give her a calcium tablet or Tums (broken in half and given orally,) and let he soak in a warm bath for 30 minutes to help release the egg. Do
not do this if there is no egg because a bath will do more harm if she isn't egg bound.