You might want to consider getting her a friend if she's alone. What percentage protein is her feed? She could be going through a molt. Does she get alot of sunlight? That affects laying as well as her age. Is she the only quail you have or did you mean she's currently alone in her seperate space?
Is she in an enclosure alone or with others? The noises your talking about are agression meaning leave me alone. Broody hens can be unpredictable they remain grumpy as I call if for a few weeks and some get over it as soon as they are broken. I would place her in a seperate cage with nothing she...
After hens are broody they usually lose alot of weight from not eating and sitting. I would give her some boiled eggs for extra protein and provide her with plenty of food and water. She should pick weight back up. All my hens have went thru this and it takes a few weeks but they end up gaining...
If they eggs aren't fertile I imagine she would sit on them as a hen does and wait for hatch. She will need to be broken if they eggs aren't developing. How many females per male do you have?