Make sure that she has granite poultry grit available in a separate bowl than feed. If possible chill a spoonful of coconut oil and cut into peckable pieces, and give it to her today. If her crop feels full and hard, massage it downward several times a day. Try to recheck the crop in the morning after she has been without food and water overnight. Here is some reading about crop problems:
https://www.tillysnest.com/2012/01/crop-issues-html/
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/
https://www.tillysnest.com/2012/01/crop-issues-html/
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/