I really wouldn't think olive oil will help with hardware disease. You're wanting to get it through her system fast? In this link there is some info. Whether it works I don't know.
Getting her to a vet would be best they can do Xrays to try and locate if it's metal. And treat accordingly.
https://www.backyardchickens.com/threads/duck-ate-nails-pleas-help.1493878/#post-25305985
Please share symptoms.
Getting her to a vet would be best they can do Xrays to try and locate if it's metal. And treat accordingly.
https://www.backyardchickens.com/threads/duck-ate-nails-pleas-help.1493878/#post-25305985
Please share symptoms.