She appears mature - her comb is pretty small, but that's kind of typical of the breed. She squats, but not as profoundly as my other hens. She lives in a mixed flock with no other Sussexes, but all of the other chickens are her age and ALL of them are laying.
I'm certain she isn't eating her eggs or hiding them. She's just never laid one. Ever had this happen to you? Do you think she will ever lay?