The survivor of Ashburton's Work and Income shootings is recovering well at home, with the support of her mother.

Lindy Curtis was shot and two of her colleagues were killed by a man visiting the welfare office three weeks ago.

Her mother Kathleen Kinnear has flown in from Zimbabwe to support her, alongside her partner and colleagues.

Elder daughter Stacey says she doesn't speak with her mother, but is extremely thankful she's alive.

Homeless man Russell John Tully has been charged with two counts of murder and one of attempted murder.