I get a feeling that she may be an Austra White
Found some here on a BYC thread from long ago.
https://www.backyardchickens.com/threads/austra-whites.888675/post-13788173
Here is another link to same thread.
https://www.backyardchickens.com/threads/austra-whites.888675/post-15320398
WISHING...