Princess Owusu-Ansah has been jailed for causing criminal damage and causing grievous bodily harm against her former friend.
The 18 year went viral on twitter after boastfully posting a video of her pouring boiling hot water on her 17 year old friend before stabbing her in the leg at a residence in East Dulwich on February 2.
The victim was taken to hospital where their injuries were assessed as not life-threatening.
Owusu-Ansah pleaded guilty to causing grievous bodily harm with intent and criminal damage at Croydon Magistrates’ Court on March 6.
She was sentenced to three years’ imprisonment at the same court on May 9.
DC Abigail Ellyatt from Central South Command Unit said: “I hope this result brings the victim some comfort in knowing this violent offender has been brought to justice, and I admire the strength and courage she has shown throughout.”