Girl on life support brain damaged after electric shock from garden tap

The family of an 11-year-old girl who's on life support after a massive electric shock in her front yard has been dealt another blow - she has brain damage.

Denishar Woods' mother was told on Tuesday that tests have confirmed the young girl has brain damage and they can't say if she'll wake up.

A machine is currently keeping the 11-year-old alive.

"There are no words to explain how I feel empty, just my girl's not my girl anymore," her mother Lacey Harrison said.

Doctors don't know if Denishar will wake up, and if she does, what she'll be like.

"I'm petrified of the unknown," Ms Harrison said.

Denishar has remained in the same condition since she lost consciousness on Saturday night.

Massive electric shocks were sent through her body when she tried to turn off a tap in the front yard of her Perth home, which the State Government owns.

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EnergySafety director of electricity compliance Mike Bunko said the fault was likely an upstream "open circuit neutral", which could be caused by corrosion, a loose connection and in some cases, poor workmanship.

Mr Bunko said residual current devices would not protect against an open circuit neutral.

"The fault is preceding the RCD," he told 6PR radio on Monday.

"If you get a fault upstream, generally before the meter where the electricity is coming in, the RCD can't see it and can't operate."

Doctors say the next couple of days are critical. They're concerned Denishar's brain may swell and cause a bleed which could cut off her airways and leave her brain dead.

"I'm thinking she's going to just wake up... but it's not that easy," Ms Harrison said.

Not only is Denishar's mother having to deal with this terrible news, she also has to find a new home and still be a mum to six other children. However, the housing authority has offered a solution.

"They've offered me accommodation or a new home in Caversham," Ms Harrison said.