Stuck egg, in some kind of membrane-- can't feel shell!

[Porch Chickens]

Help Help!
My chicken has an egg right inside her vent but it's in some kind of membrane and I can't feel the shell.
I've tried shooting some olive oil up there with a dropper, given her a couple of tums, and now have her soaking in a warm bath.
She's been sick for at least 5 days, and we thought she'd eaten a poisonous plant we saw the other bird eating (they are fine and plant is now gone). She' lethargic, but will eat egg, yogurt, oatmeal.
Have also given electrolytes.

 

[Eggcessive]

Can you try to manipulate the egg out by lubricating a gloved finger? After her warm bath I would leave her in a warm humid room to sleep. That is a long time to be egg bound. Have you thought about taking her to a vet?

 

[Porch Chickens]

I actually did try to feel inside again, and also did squirt a couple of droppers of olive oil into her vent.
I called the vet, and the technician said that the reason I can't feel the egg shell is because the egg is still not all the way down the oviduct, even though I can feel it right there near the vent. So, there's no moving it out until it's all the way through the oviduct-- my gloved finger was feeling it through the oviduct.
I did make a vet appointment for the morning. We are in San Diego and this will be expensive. My husband is not happy about me taking her in. I'm hoping they can get things moving with some medication, because we wont' be able to resort to drastic measures such as surgery.
I'll post back with an update tomorrow. I'm praying I wake up to see she's layed an egg. She's inside in a small covered cage now, cozy and warm.

 

[Eggcessive]

The egg may be a shell-less egg. Here are some pictures that may help to understand the reproductive tract and where the shell gland is:

 

[Porch Chickens]

Thanks for posting those photos-- I'd seen that chart before and it's very helpful.
It's not a shell-less egg-- it's a big, hard perfectly formed egg-- I can feel it from outside her body and inside!
She's off to the vet in a few minutes, so I'll post an update.
Thanks!: )

 

[Porch Chickens]

Well, just got back from the avian vet. He told me she wasn't egg bound-- but that rather she has "Lash Egg". What I was feeling was a mass-- not an egg.
He said 4 years was a good life for a RIR and that being high producing birds they often have these kind of issues, so best to put her down, which he did. He did a complimentary autopsy to confirm the diagnosis after putting her down.

One thing this vet keeps telling me is that most producers of organic feed don't know what they are doing and are just making money from the trend. He says he sees literally hundreds of times more egg bound birds and other problems like this with birds on organic feed. He specifically named Kreuses. Anyone hear this from their vet? He warned me about this 4 years ago, the first time, and I poo-pood it.