A White Island volcano survivor has come out of a two month-long induced coma to discover her husband and teenage daughter were killed in the disaster.

Lisa Dallow, 48, survived the eruption which killed 21 on December 9, but her husband Gavin, 53, and daughter Zoe Hosking, 15, never made it off the New Zealand volcano alive.

Ms Dallow has been recovering in The Alfred Hospital in Melbourne with severe burns to 60 per cent of her body, unaware of the tragedy until waking up this month.

She has been left devastated by the heartbreaking news, a family spokeswoman said.

'It took a while for it to sink in and then she just kept saying she can’t believe they had died.'

Lisa Dallow, 48, (centre) survived the eruption but her husband Gavin, 53, (left) and daughter Zoe Hosking, 15, (right) never made it off White Island alive on December 9

Gavin Dallow, 53, (left) and his step-daughter, 15-year-old Zoe Hosking, (right) died when the volcano erupted on White Island in December

Ms Dallow can only remember flashes of the horrifying day.

'She remembers it exploding and then telling everyone to run,' the family friend told Adelaide Now.

'She then recalled how rocks were falling everywhere and hitting her on the back.'

The family spokeswoman said Ms Dallow's last memory before blacking out was wondering when rescuers would arrive.

The disaster left her critically injured with burns to 60 per cent of her body.

After being rescued she was flown from New Zealand to Melbourne for treatment where she was put in an induced coma.

She already missed her husband's funeral last month when 600 people flocked to the Adelaide Oval to farewell the beloved lawyer.

Ms Dallow missed her husband's funeral as she was in an induced coma in hospital recovering from her injuries

Family are now hoping she will be able to attend a memorial for her daughter Zoe, which has been delayed.

Zoe died near the volcano and her body wasn't retrieved until a recovery operation several days after the eruption, while Mr Dallow died in a rescue helicopter.

Ms Dallow is no longer considered critical and faces six months of rehab, as well as having to return to the now-empty family home.

'She is burnt from head to toe all on her back. The only part of her body that is not bandaged is her face,' the family spokeswoman said.

Mr Dallow's funeral saw 600 people flock to the Adelaide Oval to farewell the beloved local lawyer

Mourners in the front row of the service with Ms Dallow conspicuously absent since she was in hospital

The family didn't know the trio planned a day trip to the active volcano from their Royal Caribbean cruise and were surprised as Mr Dallow was famously cautious.

21 of the 47 people on the island at the time of the eruption died, either there or in hospital.

Another 26 were injured by the deadly ash clouds, with many still in hospitals in Australia, New Zealand and the United States recovering from their burns and other injuries.