1 / 9A mother has been jailed for 15 years and her boyfriend for 14 for killing her three-year-old daughter because she was getting in the way when they wanted to have sex.2 / 9Kaylee-Jayde Priest was found dead with chest and abdominal injuries at the flat where she lived with her 23-year-old mother, Nicola Priest, on August 9 last year.3 / 9The child's mother rang 999 but a jury convicted Priest - along with her 22-year-old lover Callum Redfern - after hearing the youngster had been 'dead before the call was made'. 4 / 9The mother was sentenced to 15 years for manslaughter and a three year concurrent sentence for child cruelty 5 / 9Sentencing the pair, Mr Justice Foxton QC said: 'On the evening of August 8 you Redfern went to Priest's flat. The two of you went to have sex. Kaylee wanted to stay up and play. There is no direct evidence of what happened next.6 / 9'Kaylee was sick more than once during the night as a result of the severe beating. You lost your tempers and it is clear you were joint participants in that assault. You both knew you had seriously injured Kaylee.7 / 9'You, Priest did nothing to seek medical help. A prompt call could have saved Kaylee's life. You both lied repeatedly during interviews.8 / 9'From the severity of the injuries caused by the assault it is clear there was an intention to cause serious harm. The injuries were caused by a ferocious assault.9 / 9'You and Redfern were equally responsible. You had ample opportunity to raise any concerns. Kaylee was very vulnerable and you were in a position of trust. You did nothing to summon help.'The final moments leading up to the death of Kaylee-Jayde Priest were revealed in chilling CCTV footage.