Raw pain drives charity plea from slain officer's mum

Judy McCrow and Terry and Sue Arnold want the public to support the Blue Hope charity. (Darren England/AAP PHOTOS)

For Judy McCrow, the mother of a slain policewoman, the heartbreak is unbearable and the pain still raw.

But two years after her precious daughter was gunned down west of Brisbane, she is leading calls to "future proof" police support charity Blue Hope, as demand surges.