A woman allegedly stabbed to death by her teenage stepson was regularly heard having arguments inside her home, neighbours said. The 42-year-old Thai woman was found in her home in Woolooware, south Sydney at about 1.30am on Wednesday suffering multiple stab wounds to her back. The former aged care worker, who also did shifts in a bakery, was treated at the scene before being taken to St George Hospital in a critical condition where she died shortly after. Police arrested the teenager at the home and on Wednesday afternoon he was charged with murder. A neighbour who gave his name as Louie said he heard loud arguments coming from the house nearly every weekend.