The big ol clutter thread: https://www.backyardchickens.com/threads/a-cluttered-run.1323792/page-6#post-25037140Yea, sounds like she's hiding out from the mean girls, unfortunately. There is a good thread around here on adding hiding spots & clutter. Maybe @rosemarythyme has that?
I also agree she sounds like she's hiding from bullies and not broody, so adding hiding spots as well as multiple feeders/waterers spread out, using the clutter to break line of sight, can help.