From the autopsy report:
NARRATIVE SUMMARY OF CIRCUMSTANCES SURROUNDING DEATH
26 year old female was in the office/bedroom of her home. Her husband came home
and the residence door was unlocked. he went upstairs and saw her on the floor in a kneeling position. This was not unusual because it's the position she took whenever she had real bad cramps. However, when he turned the light on, he saw all the blood. He rolled her over and saw that she was not breathing. He thought she had been shot, and called 911. Police have not found a murder weapon.