There are five bullet wounds of entry on the right side of the back: three on the posterior chest cage and two over the right lower posterior lumbar areas. From up downwards:
 The first is located in the 5th intercostal space, 3 and 3/4 inches right of the midline.
 The second is in the 8th intercostal space, 5 and 1/2 inches from the midline.
 The third is in the 9th intercostal space, 1 and 1/2 inches from the midline.
 The fourth in the tip of the right 12th rib, 3 and 1/2 inches from the midline.
 The fifth is over the crest of the posterior right iliac bone and 5 and 1/2 inches from the midline.
There are three exit wounds:
 The first is over the left interior chest laterally and left margin of the breast, in the 4th intercostal space and 5 and 1/2 inches from the sternum.
 The second is in the anterior abdominal wall, below the xyphoid process and 1/2 an inch from the midline.
 The third is laterally and 3 and 3/4 inches to the right of the umbilicus.
Heart: A bullet wound penetrates from right to left through both atrium.
Lungs: There are three through and through bullet wounds, corresponding to the three bullet wounds of entry on the right posterior chest cage and one bullet wound through the left lung, in line with the wound through the heart. They are associated with extensive hemorrhage of both lungs.
Abdominal Cavity: A bullet wound penetrates the liver. A bullet wound penetrates the right kidney, the left is normal.
Head: No injuries or skull fractures.
The bullet wound over the posterior iliac crest penetrates the deep muscles and exits to the right of the umbilicus. One bullet is recovered in the subcutaneous tissue of the base of the anterior neck (left side) and the other bullet in the subcutaneous tissue anterior to the right 7th rib, which it penetrated of the sternum. The entry wounds aperture 3/16 inch in diameter. The exit wounds are larger.
The trajectory of the bullets seem to indicate she was struck while running across the shooter's line of sight, or possibly stationary at some point. Betty Lou was found with her head facing eastwards, toward the Rambler, likely as a result of her legs buckling under her, and falling backwards. Her head was approximately 28 feet from the rear of the Rambler, her lower extremities slightly further than 33 feet away.