Your post seemed to focus on her egg apparatus so it didn't seem to be the crop, but now that you have discussed further, I think she had a crop issue from something she ate that was moldy. It's possible that her crop developed a fungus from that, maybe some mold in the feed. Green poop is mostly a sign that food is not being processed or getting through. In that case, the food just stays in the crop and is mushy, but won't pass out the proventriculus. You could only have done crop surgery on her and removed the gunk. I lost two hens this year to some bad feed (co-op had a flood and didn't remove that bad--being plastic, couldnt tell it had been wet) that I wasn't aware of till we were at the bottom of the bag. I did crop surgery on the second one, but it was too late and she died the next day. Others did eat the feed, but those two hens were in molt and their systems were already depleted. Thought the last one would make it because she did begin eating and perked up for awhile. So, unless you were willing to cut open her crop and empty it or have a vet do the same, there's nothing you could have done. Always check your feed, smell it, see if some is clumped together, meaning it got wet.
I'm not sure that was her only issue and I am not a vet, nor did I see your bird, so take everything with a grain of salt. I know it's hard, but for the future, if you have a bird whose crop feels "doughy" and lots of green watery poop, could be crop stasis.
ETA: If she was egg bound, you could have felt the egg in her oviduct through the vent, however, if she was laying internally, there was nothing you could have done. I've saved a few with reproductive infections with penicillin, but failed to save about half of them. The only permanent cure for internal laying is a hysterectomy, an expensive proposition and not something most would consider for a hen.
Also, I have moved this thread to Emergencies. It may have seen more traffic here, I think.
I'm not sure that was her only issue and I am not a vet, nor did I see your bird, so take everything with a grain of salt. I know it's hard, but for the future, if you have a bird whose crop feels "doughy" and lots of green watery poop, could be crop stasis.
ETA: If she was egg bound, you could have felt the egg in her oviduct through the vent, however, if she was laying internally, there was nothing you could have done. I've saved a few with reproductive infections with penicillin, but failed to save about half of them. The only permanent cure for internal laying is a hysterectomy, an expensive proposition and not something most would consider for a hen.
Also, I have moved this thread to Emergencies. It may have seen more traffic here, I think.