I have grown SSH a few times, definitely not a beginner strain...VERY finicky and a LIGHT feeder, use very very low nutes, like 1/4 strength, every OTHER watering...trust me man, it sucks, but you burnt her......try flushing it with 3-4 gallons of straight water....it looks pretty dead to me, but if there are 2-3 living leaves, you might save her....better luck next time, and slow down the nutes!!!
whiskeytango