LONDON - A British judge on Tuesday ordered the hospitalisation of a depressed South African woman who smothered her three young disabled children as they slept before attempting suicide. Tania Clarence, 43, had pleaded guilty to manslaughter by diminished responsibility of her three-year-old twins Ben and Max and four-year-old daughter Olivia in April. Prosecutors had asked for her to be sent to prison. Judge Nigel Sweeney said there was "clear and convincing" evidence that she was suffering a "major depressive episode" when she suffocated them at the family home in London. "The prosecution accept that you loved all four of your children," he told the Old Bailey court, but said she became "overwhelmed" by the challenge of looking after them.