I've had so many theories about this case it makes me dizzy. I've always thought that Teresa Neves knows exactly what happened. Thinking this also makes me think that she would keep her mouth shut to protect herself and her family, ie., Ronald, Hope, herself. I do not see her keeping her mouth shut to protect Misty or Misty's family, no way, no how. My strongest theory to date is that Ronald, without a babysitter, drugged the children and locked them inside the mobile home, thinking that his mother would soon arrive to be with them. Teresa arrived to find a dead or dying Haleigh, called her mother to come over and bring someone with a bit of medical experience. Haleigh is dead. A plan goes into action, Teresa calls Ronald and they all try to find Misty to get her over to the mobile home. Misty finally is located and brought to the mobile home and that is when she discovers that Haleigh is dead and she is reported to be walking around crying while talking on the phone. Ronald tells her to call her brothers to come over and "handle" the situation, most likely promising them drugs and the automatic weapon as payment to dispose of Haleigh. This is when Misty's brothers and cousin come into the picture. This is my theory until something is proven otherwise.