It's apparent she is attempting to expel an egg; when soft that can make things a lot more difficult. It would be best to move her into a warm stress-free area, that's humidified. Administration of a calcium supplement is indicated in most cases to promote muscle contractions and aid in the future for correct formation of the shell. For that, you can use calcium gluconate, dosing at 0.2ml per pound orally, or crush tums, mix it with water, and give her a few drops orally. If she is not drinking much, offering an electrolyte such as Gatorade, or Pedialyte would be good. If you don't see improvement after some time, and her overall condition worsens, a vet might be best.