Theres a few things going on here that I would try and fix , I would boost the amount of growth formula your giving her so she comes back to a nice lush green as well as add some CalMg . This should help fix the problem you have going on here I would also add a rooting agent to help mend the roots that are damaged . One thing people always forget is that the problems you see on top of the plan are also under that plant affecting the root zone . With a good root stimulant , chilation agent and what I suggest above your plant will spring right back into full swing !
-Happy Growing!