Beth. this is from Annie who has been unable to reply
I haven't been able to reply in hours.
Beth, when my Maxi pionus went on her laying spree, 18 eggs over a period of a couple of months, my vet had me cool her area down, darken the room except for 5 hours a day of light, remove all veggies so it would look like winter with no fresh foods. It didn't work for us but may for you.
She lived in the birdroom with full spectrum lights, usually, so I moved her to the panelled den, put a quilt over the window and cut her fresh food out. She loved those veggies. I turned on the overhead incandescent light for only 5 hours each day. I cried because I felt like I was abusing her, but the vet said she is going to die eggbound if you don't try this.
She sat on her eggs for a long long time til I finally sneaked them out, one by one. She didn't act like she missed them after the first day. (She didn't sit on 18 at a time, just 2 or 3.)
Have you candled the eggs? It's possible some are viable and it would be a shame to toss those. If the eggs are not viable you can start taking them out one each day. Looks like they are ready to do this all over again. Be sure to have a good calcium source and that the hen eats it. Cuttlebone will be good if she chews on it.
Annie