Exactly. What an odious waste of skin. How could a daughter or son with a pinch of humanity want to kill their father for money? It sickens me.
The daughter had seen her dad spend a small fortune on his lifestyle with his girlfriend for over a decade. The impending marriage was going to allocate half of what was left to a woman she hated. In my surmise She snuck into the lake home and killed him , perhaps unplanned, but then emptied her girl-gun into the girl friend who wasn’t even a threat at that point. The GF came in upstairs while alarm was set and didn’t know that the BF was dead.