![Stephanie Fernandes interrogation](https://assets3.cbsnewsstatic.com/hub/i/r/2023/03/09/eb480718-f6b6-4060-bf96-ae85c41c8b74/thumbnail/640x360/939e4ce8cb726bd7353712f80db240bb/wagner-03.jpg?v=57e8061b2038d609da26e467de5ddfb8#)
Frantic woman in police custody explains her stained clothes: "This is Andrew's blood"
Stephanie Fernandes says she had no choice but to defend herself the night her fiancé Andrew Wagner died from a fatal knife wound to his neck in their Worcester, Massachusetts, home.