1yr Hen hasn't laid since fall; why??

[BlessedChaosHomestead]

We have a cuckoo maran, she's a year, or almost a year.
Her name is Baby due to the fact she was super small; we thought we might lose her. But she pulled through.
She started laying a small dark almost chocolate egg. Honestly I think she only has laid maybe 5-7 eggs. But fall hit and she quit.

LITERALLY quit. She's not laid since.
We've had her with the roo for 5 days now just to make sure. (He's in solitary with broody hens. lol)

Why would this hen not lay?
I thought it was due to fall, then molt. I've wondered about bullying, because while she will bully others. (She's the guard dog of the flock. She will go after cats out of the fence.) She also gets bullied by everyone except the younger ones, which she in turns bullies them. lol

I've also wondered about her getting enough food, but she's plenty fat enough, so she's eating & that would have been corrected with her with just the roo & the other broody hen(s).

Any help?

 

[nuthatched]

If she's always been small, she might have development issues.
What her diet? It's not good if she's fat.

 

[azygous]

Laying cessation can be attributed to many causes, diet, environmental, disease, etc. But I'm agreeing with @nuthatched that in your hen's case it's congenital. Undersize chicks often have undeveloped or underdeveloped organs that can affect them all their lives.

 

[BlessedChaosHomestead]

If she's always been small, she might have development issues.
What her diet? It's not good if she's fat.

Meant as in plump; def not starving but not going without.
She just eats her feed; same as rest. 18% chick starter instead of 16% layer.

 

[BlessedChaosHomestead]

Laying cessation can be attributed to many causes, diet, environmental, disease, etc. But I'm agreeing with @nuthatched that in your hen's case it's congenital. Undersize chicks often have undeveloped or underdeveloped organs that can affect them all their lives.

Wondering that too.

 

[nuthatched]

Meant as in plump; def not starving but not going without.
She just eats her feed; same as rest. 18% chick starter instead of 16% layer.

Could just be malformed