Chicken stopped laying! WHY?

[Juss511]

My Easter Egger is about 7 months old and in about July stopped laying. Why would she stop laying?

 

[Yay Chicks!]

Could be that something stressed her? Or, some will do a mini molt and take a break from laying. Could she be hiding eggs?

 

[Juss511]

I dont think so nobody picks on her and she gets a lot of food. She is on the bottom of the pecking order though i think.