The waiting is the hardest part!!! I feel your pain! Mine started laying just a few weeks ago at 24 and 25 weeks! Once they start it is magical mine have been laying an egg for me each day since!! I hope it is any day now for you! Be patient
She is getting so close but we are down to 11 or 12 hours of daylight here so I'm sure it's slowing the process... or at least that's what I've read. This is my first time raising chickens so I'm just winging it