Grandpa had one go "broody" like that. We kids (I was little then) brought home six new chicks from the feed store and slipped them under her one night. Next morning she was a new mom - clucking and teaching them to scratch. An ol' blacksnake got two of them but she raised the other four that summer. Total personality transformation.I've noticed them not laying for a few days when the temperatures get high/hot; especially when they are nearing the end of their laying life (~2 good years). Also, the type of food will cause them to miss a day or two. However, I don't think I've had one stop for a week then begin again.
Which brings up Roger who tapered off laying then stopped completely. She laid good for two years, including winters. She got really mean after she stopped. Just recently she was keeping the other young hens from drinking and in my aggravation I tossed her out of the coup. I'm sorry to report (Evo) that I forgot to put her back in and the next morning....feathers, lots.