Poop like that indicates over consumption of water to the detriment of nutrition. In other words, she's starving due to drinking too much water and not eating enough due to her crop feeling full of water.
Has it been very hot where you live? If so, I would suggest giving her a cup of water with one teaspoon sugar and a pinch of baking soda and salt stirred in. Have her drink it as her only water source today. You may need to confine her to accomplish this.
The other thing that can cause this kind of poop is a digestive obstruction, sort of like constipation. Do two things. Give her grit, either sand or very small gravel. You may buy it at the feed store or sift it from the soil. The second is coconut oil. Use the solid form and divide it into a tablespoon of pea size bits and freeze them. Slip one at a time into her beak. Try to get half into her now, and the rest in a couple of hours.
Keep watch on her poop. You should see results after several hours.