Will she survive? What else can I do to save her?

just to back up something -- if it can fit in through the roots, it's going into the plant. it is a semi-permeable membrane that is not selective beyond physical size of the molecule trying to enter. the only time "nitrogen" can't enter is if it is some source that needs to be first broken down my microbes before it can enter. the plant does not control the microbes. if it fits, it's going in... there is no selective procecss taking place except for physical limitation on size of the moelcule.. it's more like a sieve and not active transport. flushing is extremely harsh thing to do to a plant. always avoid it, if possible. with soil you want 50/50 drainage amendment - perlite/vermiculite et al. with coco you want 70/30 - it needs less because it holds less per volume. fertilization is like riding a bike. too many variables in soil. you have to learn that balance yourself. get a leaf chart and start making intelligent adjustments -- preferably a bit early before plant takes a nosedive. Looks like nitrogen deficiency. Maybe, pH is too low? Something to investigate, but usually ph issues come with more than 1 symptom coinciding. the droopiness could be related to irrigation habits but also other things too. so to water -- water entire substrate with no dry pockets. alittle runoff is fine. don't let it sit in runoff. Repeat when top 1" dries. Simple as that. How frequently you fertilize depends on how concenrated it is when you add it. every 3rd irrigation? every 2nd? just depends on personal choices. More frequent with proportionally lower concentrations generally results in faster growth rates, but also results in more effort from you.