The devastated family of a pregnant woman who was hit in the head with a concrete block in a shopping centre car park has been told she is unlikely to survive.
WARNING: This story contains details some readers may find distressing.
Dianne Miller, 30, suffered cardiac arrest after the brick was allegedly thrown through the window of the vehicle she was sitting in at Waterford Plaza in Perth's south on Tuesday night.
Speaking outside Royal Perth Hospital where Ms Miller remains in a critical condition, her brother Malcolm Clifton said their family had been warned her condition would most likely get worse.
"Her brain is swollen, it's swollen too much," he said.
"They're going to keep monitoring her brain, if it keeps swelling it's going to stop the blood going to her brain.
"She's going to end up brain-dead and once that happens, she'll be dead and the baby will die.
"The baby's too young to come out."
Mr Clifton said Ms Miller's eight-month-old baby son Lloyde is "going to grow up without his mum now".
"They were close as, he was always with her," he said.
Mr Clifton said Ms Miller was going to find out the gender of her baby next week.
He said the family had been "destroyed" by what police say was an unprovoked attack.
Police say Ms Miller was a passenger in a car being driven by her partner who became involved in an altercation with a group of teenagers, before a 17-year-old boy allegedly threw a concrete block through the window, which struck her in the head.
Passers-by spent 20 minutes attempting to resuscitate Ms Miller before she was taken by ambulance to Royal Perth Hospital, where she remains in intensive care.
Mr Clifton said he was told by police there had been an argument.
"All I heard is there was an argument, and my sister told them to go away, and as they drove off, someone threw a brick through the window," he said.
"She didn't even see it coming. It hit her straight in the temple.
"We are destroyed, we want these people whoever they are, brought to justice, we want what's deserved."
Mr Clifton described his sister as a good and beautiful person who had been through a lot herself, and had just got her "life on track".
"She just got on her feet, she just got a house, everything was working out for her and now everything is gone."
He said the family would pull together to help her husband and son.
The 17-year-old appeared in the Perth Children's Court this morning on charges of grievous bodily harm and breach of bail, and was remanded in custody.
The court heard the bail charge was unrelated to the assault.
Prosecutor Brad Hollingsworth the woman's condition had improved slightly, but was still "touch and go."
