It looks like you have some type of lockout, you can definitely tell that there is a Calcium/Magnesium deficiency and the stems seem to have a little purple/reddish color to them which is a sign of a phosphorus deficiency or that the plant is getting to cold at night, and after reading your nutrient section I think overfeeding is the cause. You have to remember with autoflowers they are very sensitive when it comes to how much nutrients they can take. I would suggest giving her water only with a ph of 6.0-6.5 until she begins to perk back up then you can try feeding with nutrients again but this time dial it back to prevent another lockout.