Based on the circumstances , motives, the lies and opportunity it definitely looks like she did it . Though the narrative was chilling it didn’t feel very detailed and left the viewer with a sense of wanting more . It’s an ongoing case so maybe many things cannot be divulged or jolly interviewed directly . If she is a sociopath/psychopath then she would love the attention and would want to brag about her murderous achievements or blatantly deny the same without batting an eyelid . Nevertheless, was a good watch but could have been much better.