Below the rib age, upper thrust with a fighting knife and side to side motion.
Puncture to diaphragm prevent the lungs inflating to make verbal sounds. Organ/heart damage and severe bleeding will be contained to the chest cavity.
That’ll do it.
Just guessing, but I’m going with frantic stabbing...psycho style.
The murder scene was allegedly gruesome. There was lots of blood in the house and also blood streaks on the outside of the house.
Were there bloody footprints or droplets of blood throughout the house and also from whichever door the perp used to leave the house?
Did the perp arrive or leave the scene on foot or in a vehicle? Bloody clothes? Bloody shoes? Bloody knife, what type? Kitchen knife, hunting knife, skinning knife? Have any weapons, clothing, or shoes been found yet? Would the police release that info?