It comes amid a movement to tackle the dire issue in Australia.
"Christmas can be a time of cheer and also a time of challenge."
The 'Wake Up' singer was unable to "properly" grieve her mother's death.
"When they ring, they're wanting something more than just that voice, they're wanting something for themselves which is that change."
It comes amid controversy over the rapper's domestic violence conviction.
She campaigned against domestic violence after her daughter was murdered.
"It's invalidating of that trauma."
There were 172,727 reported family harm incidents in 2021 and almost 500 involved guns.
The actor said he was joking when he threatened to set her on fire.
