:thumbsup Try get her to eat, sounds like she's wasting away. Maybe some meal worms, boiled egg yolk, cat food, wet her feed with plain yogurt, some Nutri Drench .... Good luck
Sounds like she's broody, she won't lay while she's broody & not eating so I would break her. Put her in a wire cage & suspend it so the air flows under the cage, no shavings, just food & water, you can keep the cage in the coop so she's still part of the flock.
You tried giving her eggs, that...