Soul Bonding

For a while, she held his intense eyes and then without even comprehending it fully, she thrust the knife through his chest with one swift movement. A sickening voice of skin puncturing was picked up by her ears and all the anger evaporated from her body, horror starting to fill its pace. 

From his eyes, her eyes moved down to see whether she had really stabbed him and the sight made her insides churn. The knife had pierced through his chest halfway, red blood starting to stain his white cotton shirt that he was wearing. He was still holding her wrist and and half of her hand otherwise she would have let go of the knife long ago. For some reason she felt like it wasn't just her hand's force alone which caused that blunt knife to push through his solid chest. Did he force her hand?