Tripps believes his mother has committed murder. She is about to kill again. Lexi feels responsible for the accident that resulted in her mother's death. Syreeta knows the truth. But all she wants is to add the souls of children to her bracelet.
I have a specific way I want and write blurbs which I'll share.
1. The first line must introduce the protagonist(s) and intrigue the reader with an interesting situation.
2. Followup sentences must show the plot, and only the main plot, as concisely as possible.
3. The last sentence must end the blurb with an unresolved question or problem that shows conflict.
Right now, your blurb doesn't show a plot. More like a situation. Also, the ending sentence hints at a problem. No hinting. Show what it is instead.