She suffered 47 stab wounds. Was it her husband?

Valentino Ianetti said he woke up in the middle of a cold December evening and found his wife of 37 years in a pool of blood on their bedroom floor. Pamela Ianetti was clinging to life with 47 stab wounds across her body, and she ultimately died from her injuries. Valentino Ianetti was arrested and charged with murder, but prosecutors later dropped the case. Did Pamela Ianetti stab herself? Or was she murdered?