So sorry about the freak accident. I would have taken her to a vet if possible after trimming off some of the ends of the “spear,” since she could have bled out if an organ or blood vessels were involved. We have used the method above to remove large fish hooks from hands before. I do hope that you can save her. Chickens can sometimes withstand some pretty major injuries. Vetericyn wound spray, weak betadine (povidone iodine) and saline are all good for wound irrigation. An antibiotic may be helpful.