Wow, 9 years old.
So she had the mothering instinct, but didn't want to set.
My first Flock was 5 Golden Comets.
My oldest lived to 50 months old. None of mine went broody.
When I only had one GC left she started following the Barred Rocks while free ranging.
But she went back to her coop after...
Buff Orpingtons yes, Barred Rocks not broody.
I've had 7 Barred Rocks for more than a year, 5 more than 1 1/2 years and the final 3 for 33 months, none ever went broody.
I recently bought 4 more Barred Rocks, because I don't want any setters.
I buy Sex-links or non-broody breeds. No...