Well that is a real bummer Wingitman. I had a real scare with our broody early on. Evidently she had gotten off her nest only to have another hen take her box over. I found her sitting on 2 eggs in the next box instead of her own. Luckily they were still warm to the touch so I hustled her back onto her own nest where she settled down like nothing had happened out of the ordinary. She is such a good little hen.I'm sure she would sit on a pile of eggs no matter how big it was- like Foghorn Leghorn's old maid hen Prissy?
How far along were your hen's eggs? Did they get cold? I'm thinking about making a home built incubator just to have it on stand by in case we have a staggered hatching thanks to the lazy no account hens that donated to Aggie's cause. My big concern is that she is sitting on a few infertile or quitter Welsummer eggs. Time will tell. Don't count your eggs out until you have a chance to candle the to be sure. Once again time will tell. Good Luck.