Victoria Vanatter of Springfield pleaded not guilty Monday to charges of first-degree domestic assault and armed criminal action in the November 23 incident.
According to Police in the US, a 19-year-old woman from Missouri allowed her intoxicated boyfriend to drink her blood before stabbing him during a subsequent argument.
When police arrived at their home, they discovered the bloodied couple and “I’m sorry” inside a heart scrawled in blood on the wall.
Vanetter also warned an investigator that she has the potential to become a serial killer.
Both were treated at a hospital. Vanetter is jailed on $150,000 bond.