Looking back - I have a few that I wish I had sent off instead of buried, but live and learn from the mistakes.
I also had an egg binded hen, but presented as bad prolapse. I did take her to the vet, however it still ended up with her being euthanized (because of their lack of experience with chickens - I would have had her female parts removed, however it had gone on too long in their care, and they felt by the time they would get her on the table, she would be septic). So see, doesn't mean she would have been saved - so think of her if you have another problem in the future (which I hope you DO NOT) and maybe you can help there, or even on this forum.
Take Care, and I really do know how you feel - I feel like I killed my beautiful wyndotte rooster who passed last week, but we really are new to chickens, so we are going to make mistakes. But our hearts are in the right place, so hopefully our chicken ownership endeavor will be more rewarding and less heartbreaking as time goes on. Hugs