Should I give up on her?

From what I can see you have not given any food. from what I can see if your in coco/perlite mix. Which is great for root development. Both Great white and bosys are for breaking down food and creating a healthy root system. But they need food to break down. So you have 2 choices. Top dress or bottle feed. 1. Top dress(I have zero exp so take this with a grain of salt ), like mentioned below adding coffee grounds. You add this to the top of your soil( or mix in when creating a "Super soil") and as they break down they release food for the plant. You have to pay attention to the NPK of the things your adding as they need to be in the correct values/amount for each stage of growth. If you want to go this route I would look into finding a single brand that has a veg and bloom top dress mixture pre mixed that you just add. 2. Bottles( this is how I started and stuck with ). This you would be finding a brand and using the "Feed Chart" they supply and add 1/4 what they recommend as feed to your plant. You will also want to get and EC/PPM pen, This will help you figure out if your over feeding or under feeding. Also if your in straight coco like a said above then you want to have your PH at 5.8 for veg and 6.2 for flower ( always stay in the range of 5.5-6.5 range) Good luck and Happy Growing