You’re welcome! It sounds like she’s quite comfortable. ☺️ Please give updates on her condition. Additionally, treat the flock mate that is showing mild symptoms.
Keep her separated while it’s that serious, for her own safety.
@Yorkshire Coop wrote an article in 2015:
https://www.backyardchickens.com/articles/wry-neck-causes-treatment-and-prevention.67732/
I hope your girls improve.