Looks like it needs water. Oh wait, you already killed it?

This doesn't apply anymore since your plant is dead, but I wouldn't force it into flowering until it shows you that it's ready. If you flower it before you have alternating nodes and preflowers, it takes longer to go through the flowering process. For example, one strain might take 9 weeks normally to finish flowering if it's sexually mature. If it's not sexually mature and you toss it under 12/12, it might take 12 or 13 weeks. Just making up an example, but I've noticed that before on my plants. I've tossed some in 12/12 that had paired nodes still, and they took much longer to finish.