Nice to see that your plant recovered. It was defiantly a mix between the lights being too far away and not ph'ing the rockwool cubes before you planted, more so the lights. Now you know... it's all a learning experience.
As far as using Miracle-Gro... I have had noting but good results from it. I don't know why (some) people on cannabis boards stay away from it, but to each his own. Good luck on your grow and here is to it being a female. One thing for your future grows... if they have less stress from the beginning, they have a better chance to be females.
Peace