"So I was shocked to see police cars as I was coming home from the gym early Sunday morning.
"We walked the dog through our usual route on Sunday morning, which is Brixton Cres, and were stunned to see the area cordoned off and such a heavy police presence."
She said they spoke to a neighbour who expressed disbelief at what had happened.
"We could see detectives door knocking and news crews everywhere."
She said there were lots of New Zealanders in the area and they tended to stick together.
"For example, our local bowling club is managed by a guy and his family from Rotorua, so you get to understand how small of a community it really is."
She said she was personally "shocked and extremely saddened" a mum and two children had been killed, particularly because they were Kiwis.
"I have no doubt the Kiwi community in Ellenbrook and Perth will rally around this family and friends and support them in whatever way we can, it's that sort of community.
"Brad works away a lot and as soon as the news broke I had an Ellenbrook local message me to see if I was okay and that I wasn't home alone and if I needed anything to contact them."