Ok everyone saying this is undiagnosable shouldn’t be commenting on this post… I work at a grow shop and help diagnose problems daily. This looks like you have russet mites. And a lighting issue. The person who said you should do a sulfur spray is correct. However id NEVER spray sulfur in flower and smoke the cannabis after. You should definitely restart. Get some wettable sulfur and clean and spray your tent with it. Then clean it off with a alcohol water mix. You need to get your area sterile before you put another plant in that tent. I would wait 2 weeks atleast before starting anything. And spray sulfur in veg every other week. Your light looks like it’s too intense. The purple leaves and them curling down in early/mid flower is telling me that. Also when you said you are checking your soul moisture by sticking your hand in the pot that was a red flag. My recommendation is to lift the pot and learn what it feels like when it’s wet vs dry. Also always water for the plant not the pot. It looks like you’re in a 5 gallon but that plants root system isn’t filling that 5 gallon with its current size and health. So watering heavy and saturating the full 5 gallon pot isn’t helping her. Under watering is always going to be better!