Sounds like wry neck, or the start .... Wry Neck - Vitamin E 400IU & Selenium 25mcg 2 - 3x day, NutriDrench, Thiamine/Vit B1, tuna, liver
If you got Nutri Drench, start her on that, see if it helps and give her treats high in Thiamine/Vit B1
If she's broody, what happen to the eggs she's...