Maybe you're giving her too much calcium in the watering! Maybe the pH isn't right! For coco - 5.8 pH for the start of flowering. For soil - 6.3 pH for the start of flowering! If you're using cal/mag in the watering, then this is likely the beginning of a magnesium deficiency due to too high doses of calcium in the watering! Always consider, if you're using soft water (250 ppm and below) then you add 1 ml/l (cal/mag)! If you have hard water (250 ppm and above) then use calmag supplement as needed, up to 0.5 ml/l! 👆 I write PPM in a coefficient of 0.5 for EC! 👆 Good luck, friend!