At that time, her younger son was still at the table waiting for breakfast, but the 12-year-old had disappeared upstairs, she said.
"I thought he was a drunk coming in asking for car keys. It didn't really register, I didn't really believe him," she said.
"I think I was more in shock than scared ..."
After her elder son got out of bed and fetched his car keys, the intruder - who had followed her into his room while saying he had a gun and was "holding his hand down by his hip" - snatched them from him, found the car and left, she said.
The family, which included the woman's 51-year-old husband and 22-year-old daughter, were then evacuated from their Hall St home after police found a jacket on the fence believed to contain a homemade bomb, she said.
Last night, Detective Senior Sergeant Daryl Smith said officers were hunting the offender, who had also allegedly threatened staff at another address before entering the Hall St family's property.
"While at the address they've encountered a man who, when asked to stop, instead fled," he said of the initial Whitmore St incident.
"Chasing the man on foot, one of our two officers was suddenly confronted by him brandishing a firearm."
The man then fled on foot to reach the other property on Hall St, he said.
"He entered the home and confronted the occupants, taking the keys to one of their cars."
Police are looking for a silver 2003 Honda Accord station wagon, believed to have a white sticker on its rear window with the words "Train Station" on it.
*Phone Crimestoppers on 0800 555 111 with anonymous tips.