Miss Langata prison Ruth Wanjiru Kamande has been found guilty of killing her boyfriend in Buruburu estate is a suspected love triangle.
The 21 year-old woman, stabbed her 24 year old boyfriend Farid Mohammed to death in Buruburu in September 2015 after allegedly finding a love message on his phone.
Mr Mohammed died in hospital while undergoing treatment for the 22 stab wounds on his back, stomach, chest and neck.
In his verdict on Thursday, Justice Jessie Lessit argued that though Ms Wanjiru claimed that she had acted on self-defence, the number of stabs on the deceased did not support her position.
The judge set sentencing for July 11.
Ms Wanjiru was crowned the fairest of the inmates at Lang’ata Women’s Prison in August 2016.