Distraught grandparents of newborn burned to death in her home with her mum and dad break down as they reveal their daughter's last words to them before a 'woman set the house on fire in revenge attack on housemate'

The heartbroken grandmother of a baby girl who was burned alive with her mum and dad in an alleged arson attack has revealed the last conversation she had with her daughter.

Abbey Forrest, 19, and Inda Sohal, 28, were found dead with their infant daughter Ivy inside a Point Cook townhouse in Melbourne about 3.40am on Wednesday after a blaze tore through the property. 

The teenager's mother, Elizabeth Forrest, who was so distraught she was almost unable to speak, broke down reliving the last words her daughter ever said to her.

Abbey Forrest, 19, and Inda Sohal, 28, were found dead with their infant daughter Ivy

The young family had only moved into the property three weeks ago, just before Ivy was born (pictured: the burnt remains) 

'I spoke to the night before and she said: 'Love you mum, talk to you tomorrow',' she told 9 News.

The infant's grandfather Alan Forrest said his daughter was 'glowing' at the prospect of becoming a mum.

'Words can't explain how she was with her young daughter... she was beautiful,' he  said.

The young family only moved into the property three weeks ago, just before Ivy was born.

Mr Forrest said visiting the charred remains of the home marked his first ever visit.

'It was the first time I've been up and seen where they lived — I was shocked to see the house and how bad it was,' he told the Herald Sun. 

Pictured before the tragedy: Abbey, her sister Emily, their father Alan and mother Elizabeth

Mrs Forrest described the 19-year-old's excitement at the prospect of making a nursery for her newborn

His wife described the 19-year-old's excitement at the prospect of making a nursery for her newborn.

On Sunday, friends and the local community rallied around the distraught family-of-four to pay tribute to the trio.

Mourners floated balloons and bubbles, and planted a tree in a nearby park as a permanent memorial.  

'Hug your children, because you're not supposed to bury your children. So give them a hug and let them know that you love them, because you never know when you'll see them again,' Mrs Forrest said. 

Tributes have poured in for the deceased family with Ms Forrest's sister Emily visiting the burned site on Friday morning

Jenny Hayes, 46, was arrested on Thursday morning and charged with three counts of murder and arson causing death after allegedly deliberately starting the fire. 

The sex worker and mother-of-four was believed to have been visiting a client on the bottom floor of the townhouse when an argument broke out.

The man left the property when Hayes allegedly torched a mattress, starting a fire that burned the young family alive.

Hayes declined to appear in Melbourne Magistrates Court on Thursday and was remanded in custody. 

Her lawyer Erin Byrt told told Magistrate Luisa Bazzini she didn't know her client's connection to the young family.

The court also heard Hayes was on pain medication for arthritis and restless leg syndrome and her state in prison was 'poor'.

Jenny Hayes, 46, was arrested on Thursday morning and charged with three counts of murder

Jenny Hayes, 46, was arrested on Thursday morning and charged with three counts of murder

Abbey's sister Emily Forrest visited the scene of the fatal house fire on Friday morning to lay flowers and a toy outside the remains of the home.

She laid a Peppa Pig stuffed toy at the house in tribute of baby Ivy.

She described her devastation at losing her sister who she said was 'over the moon' to become a mother.

Emily said she had just met her niece once and even then it was very brief.

'I came home from a camping trip early and sneaked into the hospital and got in a quick little visit despite Covid, and then we had a beautiful family dinner a week or so ago, so we got to meet everybody and our son got to meet his cousin so that was really beautiful,' she said.

'Abbey deserved so much more than this.'

Emily said her sister had taken to motherhood like a 'duck to water' and that she was incredibly proud of her.

Police attended the Point Cook property on Wednesday after the house was gutted by fire

Shattered friends and family attended the Point Cook property on Friday 

'I just know that she would just turn around and just tell me to try and remain really strong,' Emily said.

'She's always been a really brave person.

'She had the biggest, boldest personality. She was great. I'll always cherish the memories that I had growing up with her. She was my only sibling.'

Emily has started a GoFundMe page to raise funds to cover the costs of their funerals.

'I'm raising money to help with the cost of funerals and memorials for all three of these beautiful souls who had their lives tragically cut short.

'Any help is greatly appreciated.'

Forty firefighters battled the monster blaze for almost an hour which destroyed the townhouse within three minutes and saw two neighbouring houses damaged