A mother has been arrested after she allegedly stabbed her three children multiple times in their home in Sydney’s north-west. New South Wales police Det Supt Naomi Moore said on Monday that the children’s father woke to yells in their Baulkham Hills home, and secured the kitchen knife from his partner. He then reported the incident to police about 5.20am on Monday. The three children – a 10-year-old boy, a 13-year-old girl and a 16-year-old girl – and the 46-year-old mother were in a stable condition and receiving medical treatment in hospital. “We believe the father and the children were