One small thing that stands out but can not confirm for sure... They said that Cook came here with her girlfriend?? I found a record that mentions a woman who was part of a auto claim involving Cook were they both filed against the insurance company. That women has the same last name as my Mother name at the time. Was this girlfriend a lover or just a friend? It’s a small possibility that this person was related my my mother by marriage. Not 100% sure and I have more questions then answers.. do we know anything about the girlfriend? It’s probably not connected but it’s worth looking into to rule out. Other then that my father lived within close proximity to both women at different points but no smoking gun, yet. Still digging.