A stepfather who tortured a toddler for four months until she died has been jailed for 12 years and his wife sentenced to six years.
Daniel Bishop married Lois' mother in January 2006
Daniel Bishop, 27, from Caerphilly carried out attacks on Lois Lazenby, two, after moving in with her mother.
Bishop admitted child cruelty and manslaughter and wounding with intent to cause grievous bodily harm to the two year old.
Sarah Bishop admitted child cruelty at Cardiff Crown Court.
John Charles Rees QC, prosecuting, said: "The little girl was systematically abused, tortured and ultimately killed.
"When she died she was found to have 13 fractures to various parts of her body, a cigarette burn, crushing injuries to both her hands and numerous bruises to her head, body and limbs.
Lois' mother Sarah Bishop 'turned a blind eye' to the abuse
"The doctor who examined her said she would have suffered intense and excruciating pain and significant disability.
"Lois received no medical attention and neither of the defendants did anything to stop her nightmare."
The court heard that during one incident Bishop lifted the little girl's leg onto a red-hot gas hob causing her severe burns to her left foot.
The temperature of the gas hob was estimated at 150 degrees centigrade.
Both Bishop and her mother claimed it was caused when she walked on boiling water accidentally spilled from the kettle.
Bishop shook her so violently that she suffered a brain haemorrhage and died two days later.
Lois' mother Sarah Bishop, 29, also admitted child cruelty for "turning a blind eye".
But, the court heard, she was aware of what was going on because she crudely tried to treat her little girl's injuries.
Bishop, a drug user, started torturing the little girl "almost immediately" after moving in with her mother Sarah in the summer of 2004.
Lois was two years and three months old when she died on 8 November 2004, at the couple's home on the Lansbury Park housing estate in Caerphilly.
Mr Rees told the hearing: "Even now Sarah believes that Bishop is the best thing that ever happened to her and she does not think he committed any of the offences."
The court heard that two social workers visited the house following reports from a a tradesman working nearby that Daniel Bishop had smacked the toddler.
"Sarah admitted Daniel Bishop smacked the child, " Mr Rees told the court. "It was her view he was entitled to do so as a defacto parent."
Two weeks later Sarah took Lois to the doctors for a suspected ear infection. She was told to bring her back a week later but she failed to do so.
The court heard there was a history of failing to keep appointments or deliberately keeping Lois away from social workers at times when she was obviously in pain.
Tests carried out on hair taken from Bishop to check him for drug use, showed the highest level of heroin the forensic expert had ever seen.
A statement released by Sarah Bishop's mother Shereen Murphy said justice had been done.
"Daniel Bishop has pleaded guilty to Lois's manslaughter. I am aware that a small minority of the community are implying that I, as Lois's grandmother, was aware of what that little girl was suffering and did nothing to stop it.
"I ask - do people really think that if I could have stopped this tragedy happening, would I have allowed it to happen?"