I just checked on her, she ate her sunflower seeds. And I could feel them in her crop and it felt normal as far as I can tell.
I haven't noticed the other chickens keeping her away from food. She eats a long with them.
Maybe she is still in malt. She was losing feathers a month ago. She hasn't laid any eggs lately. For at least a month. I haven't weighed her but I know she weighs half of what my others do.