Sorry for your loss.
There can be several causes of wry neck. Injury to the head or neck, vitamin E or thiamine deficiency, or sometimes seen in certain diseases, such as Mareks, Newcastles, avian flu and others. Silkies can have vaulted skulls, and are more prone to head injury. Sometimes it...
When a chicken has wry neck symptoms, I usually advise human Vitamin E 400 IU, along with 1/4 tablet of B complex (not B12,) and a bit of scrambled egg which has plenty of selenium. Mixing a mash of watery chicken feed and water, with the small amount of egg, it can be fed to her several times a...