Having rushed her unconscious and seriously injured 10-month-old daughter Chloe to the Royal Children's Hospital, Phuritee Murphy phoned her babysitter to ask if she had done anything to her baby, a court has heard.

Mrs Murphy, 36, known as Kat, told the Supreme Court her daughter had stopped breathing and was being treated by medical staff when she rang the babysitter, mother of two Ketapat Jenkins, to try to find out what had happened.

Chloe was later found to have suffered a fractured skull and three fractures to her left arm. She died two days later.

Ms Jenkins, 30, has pleaded not guilty to one count of child homicide, which is effectively manslaughter.

Mrs Murphy said the babysitter told her that Chloe had stopped breathing about five minutes before Mrs Murphy and her husband, Tony, had arrived to pick up Chloe at 11pm on December 3, 2010, after having had a rare night out.