Then I found these, are they lice?
You found lice - use a Permetrhin based poultry spray or dust to treat her and the rest of your flock. Clean out your coop and treat it as well. Repeat in 10day intervals a couple of times to get rid of all that hatch.Thanks. Her crop is not full. Can lice make her I'll like this?
Lice will not make a chicken throw up green stuff. If you can take a stool sample to your vet for testing that would be a good idea.