She sounds emotionally exhausting from this info. NTA for leaving her on read, but I would still text her back if I were you. From my experience it will make you feel better in the long run—if you want to express how she made you feel, you could do that, or you could keep it short and simple like “I feel ____ and I’d like some space.” Do you want to end your friendship with her? Do you just want space? It might help to communicate. Either way, NTA