That doesn't sound like cause for nutrient deficit... BUT some individuals may have a higher requirement due to not processing or absorbing well.. is what I discovered through my hatch analysis even though I KNOW I provide sound nutrition not diminished by excess treats.
Was her crop empty this...
Sounds like wry neck... definitely try vitamins. Maybe E and B complex, or nutri drench?? Sometimes Marek's can present like this, but I try not to jump to conclusions.
But also try to check if her crop is empty in the morning before she eats. See if it's functioning normally. And maybe also...