Hello Icemaiden,
the attack was by either one or more of her pen mates. I didn't realize how young she was, and with her Leghorn chum from the breeders, integrated them after about three weeks. The breeder said she was younger than the Leghorn, but did not say by how much.
My fault, it shouldn't have happened, the Leghorn was not attacked, and is accepted, apart from the odd dust up. Sweetie, I now realize, is much younger, and probably unable to defend herself.
Anyway she is a great little girl, pretty, pure white and crested, like the one in the pic. on the forum.
I didn't worry too much about her, because the little monster bit me when I transferred her, the bruise lasted well over a week, and was HUGE!
Lovely though my layers are, they did their level best to take her head off!!!
All seems well, hopefully, now.