If you can separate her that may be helpful so you can monitor her more closely.
The green poo could be from lettuce.
Sometimes it can be an indication of not properly processing nutrition or it can be a sign of infection. You can try to help increase nutritional uptake by giving vitamins. I...
Sometimes it is a process of elimination (I usually ask a lot of questions).
How does her abdomen feel - hard, squishy, water balloon, etc.?
When was the last time she laid an egg, what was it like?
Also how does her crop feel, normal, possibly impacted, etc.?
She may be having some "internal...