Hey at least you did not kill her. :( Were you able to get either plant to hermie???
She can yield better. gsc does not seem to be able to handle stress as well as other strains. I was not able to get her to hermie. Some people do better with some strains more so than others.
IMHO, she did not need more of anything. Too high a concentrations of npk in one form can lock out others and cause problems that can look like underfeeding. But in fact could be signs of a toxicity. Some farmers increase levels of certain elements so high the plant cannot properly transpire. IMHO, If your nute mix needed a pk boost or something else, it was lacking to start with.
When you are constantly giving a plant more than they can take in, there will be a buildup and then problems. You may still make it to harvest, but the plant will stay a dark green and never deliver the same buds as a plant that was given proper levels of food.
Same goes for a human, if you take in more calories than you expend. You will get fat and/or sick. Some humans can take the abuse more so than others. All in the genetics.
Hope that helps, hope it all comes across as constructive criticism. Since on the internet, not easy to see that I am smiling and trying to help.Words do not always convey emotion and the tone intended.
Love and kindness!