Can someone explain internal laying for me?

[MotherhenXOXO]

Hello everyone. I apologize in advance if I am posting this in the wrong place. It's more knowledge due to a recent loss. My girl Lizzy would lay her eggs, sit, then be done for a while like every other hen. But with her, she would have labored breathing only while laying flat or doing certain activities. This would last ten days or so before it's time for her to get her egg out. About three our four days before she would lay that egg she would nest a few hours like she is about to lay an egg but she only sits. No trying to push or straining. Just nesting. Back to that tenth day, she lays her egg and it is longer then normal. Her labored breathing stops. After that first egg all the rest are normal. No labored breathing no nesting without laying an egg just still soft shells. She sits after she accumulated enough then she is done. The whole process starts over again. It's a while before she starts to begin needing to lay eggs again. The same thing as the last time , I think? She began labored breathing again for about ten days or so..This time and last time I did keep checking her vent but felt nothing there. Her comb is beautiful and her droppings are very healthy too. She acts normal besides this breathing. Finally, it's time to lay her egg..I assumed it would turn out like the first time, she would get the egg out and be fine. Within six hours she died. I should add, I know she was struggling with calcium and/or reproductive issues because when she first began laying eggs she struggled badly. She would favor one leg till the egg came out but the eggs were normal. She just simply struggled until it was so hard on her she became unable to walk. I became her legs for two years. Also after this all her shells were soft no matter what we did as far as calcium goes. I even was giving her vitamin b complex. Despite all that, 1she was happy, active, and very healthy looking. I never got the chance to see if that egg was longer or bigger this last time since she never passed it due to her dying within six hours. I do believe it was larger then it should be because I felt her vent and it was big and hard. Plus this time she wouldn't even try to push and eventually her beak was wide open and she would randomly shake her head like a wet dog. I've been trying to figure this out and came across internal laying, but everytime I read about it, it usually states yolk and not a whole egg. Is it possible that she had labored breathing for many days before laying her egg because her body was forming multiple eggs into one big one with a soft shell causing the time duration to be longer than forming one normal egg? Maybe this last time it just got so big she couldn't even push and maybe the first time she got lucky enough it was just a bit longer and not fatter? I didn't intervene because it always takes her a while and for this last time I took action when she stopped drinking, her beak stayed wide open, and that head shaking thing started. Instantly she died from me gently applying oil to her vent.. I hope whoever reads this understands what I am explaining and asking. If this could possibly be what was going on with her it will bring me a bit of closure but it will be upsetting at the same time cause I read about this while she was still alive and dismissed it cause she didn't have yolk in her droppings and I never found anything sounding close to what she was going through cause her only symptom was long periods of labored breathing then a long egg .But just maybe, if this may have been the case this post may save another baby. Thank you all.

 

[BigBlueHen53]

So dorry for youf loss. Trying to understsnd this. Shd would go ten days withiut kaying any eggs, correct? Then for three of four days she would sit in the nest every day but not strain or do anything. Then on the 10th day she would lay a big, ling egg. And then you say this:

After that first egg all the rest are normal. No labored breathing no nesting without laying an egg just still soft shells. She sits after she accumulated enough then she is done.

What do you mean when you say "all the rest are normal?" Does she lay normal eggs for several days? But then what about the soft shell eggs? When does she lay those, and how many? I don't understand what you mean when you say "she sits after she has accumulated enough then she is done." Does she lay a bunch of eggs at a time?
...

 

[MotherhenXOXO]

So dorry for youf loss. Trying to understsnd this. Shd would go ten days withiut kaying any eggs, correct? Then for three of four days she would sit in the nest every day but not strain or do anything. Then on the 10th day she would lay a big, ling egg. And then you say this:


What do you mean when you say "all the rest are normal?" Does she lay normal eggs for several days? But then what about the soft shell eggs? When does she lay those, and how many? I don't understand what you mean when you say "she sits after she has accumulated enough then she is done." Does she lay a bunch of eggs at a time?
...

She would have labored breathing ten days prior to her laying her first egg.it is also longer than it should be. The labored breathing stops once she gets that first egg out.
All of her eggs are soft shelled no matter what. After that first egg, all the rest she has no odd behavior, just still soft shells and normal size. ,( no labored breathing and nesting) When she has laid enough and is done sitting on them the whole process starts over again. First egg of the next batch causes labored breathing for ten days or so, and too long, until she she gets it out. Rest after that are normal size but soft
. We replace her soft eggs with normal eggs.
During that ten days she nests for a few hours not everyday but often. No trying to push or straining..

 

[MotherhenXOXO]

So dorry for youf loss. Trying to understsnd this. Shd would go ten days withiut kaying any eggs, correct? Then for three of four days she would sit in the nest every day but not strain or do anything. Then on the 10th day she would lay a big, ling egg. And then you say this:


What do you mean when you say "all the rest are normal?" Does she lay normal eggs for several days? But then what about the soft shell eggs? When does she lay those, and how many? I don't understand what you mean when you say "she sits after she has accumulated enough then she is done." Does she lay a bunch of eggs at a time?
...

When I say sitting, I mean broody. Thought I should add that too.