Family members of an Aboriginal woman who died after suffering catastrophic brain injuries while locked in a Victorian police cell are adamant she will be remembered for more than her death.

"She was a proud Yorta Yorta woman who loved her family, her community and was a strong voice for what she felt was wrong," Ms Day's daughter Belinda Day said.

Friday was the final day of the three-week coronial inquest into the death in custody of Tanya Day.

The 55-year-old was arrested for public drunkenness while catching a train from Bendigo to Melbourne on December 5, 2017.

Ms Day was taken to the Castlemaine Police Station, where she was left alone in a cell for four hours, despite repeatedly falling and hitting her head.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 4 minutes 11 seconds 4 m 11 s WARNING: DISTRESSING CONTENT TANYA DAY HITTING HER HEAD IN CUSTODY

Timeline of Tanya Day's interactions with police 3:14pm Tanya Day is removed from a V/Line train by police at Castlemaine

Tanya Day is removed from a V/Line train by police at Castlemaine 3:37pm Ms Day arrives at Castlemaine Police Station

Ms Day arrives at Castlemaine Police Station 3:56pm She is placed in a holding cell to sober up

She is placed in a holding cell to sober up 4:50pm Ms Day suffers a traumatic head injury when she falls forward and hits her forehead on the wall of the cell

Ms Day suffers a traumatic head injury when she falls forward and hits her forehead on the wall of the cell 8:03pm Police perform their first physical check on Ms Day — she is on the floor with a bruise on her forehead

Police perform their first physical check on Ms Day — she is on the floor with a bruise on her forehead 8:25pm An ambulance is called

An ambulance is called 8:54pm Ms Day is taken to Bendigo Hospital in an ambulance with lights and sirens

Ms Day is taken to Bendigo Hospital in an ambulance with lights and sirens 9.48pm Ms Day is unconscious with bleeding on her brain

Ms Day is unconscious with bleeding on her brain 3:25am She is flown to St Vincent's Hospital in Melbourne where she remained unconscious until her death 17 days later

"We want to know whether the police who should have cared for Mum committed an offence in denying her dignity and ultimately her life," Belinda Day said.

The coronial inquest is giving special consideration to whether systematic racism was a factor in the way she was treated by authorities, and ultimately her death.

Friday's hearing heard from Victoria Police's priority communities division Superintendent Sussan Thomas.

Superintendent Thomson was unable to answer detailed questions about the unconscious and implicit bias training officers dealing with Ms Day would have received.

"I'm unable to say if there was in existence at the time," she said of whether a training package was available to Castlemaine police officers in 2017.

"There is a written document that is a draft at this point, it is being reviewed," she said in response to questions by the Day family's lawyer Peter Morrissey.

Ms Day's children — Apryl, Belinda and Warren Day — were the final people to give evidence at the hearing.

Family members decorated the court room with native flowers and colours of the Aboriginal flag as Ms Day's son and her two daughters prepared to tell the coroner, Caitlin English, about their mother.

Boxes of tissues and red grevillea flowers were passed around.

"She was a loving, nurturing mother and she passed that love onto the community," Apryl Day said.

"Pride, resilience, strength — all the qualities that we have, they're Mum's qualities, they're not from anyone else, but what she embedded in us.

Family calls for criminal investigation

Outside the court they spoke about the importance of remembering their mother's life, not just her death.

Tanya Day died in hospital 17 days after her arrest. ( Supplied )

"To speak about who she was, what she stood for and the legacy we want to carry on for Mum was really important and I think that really shows with how people reacted afterwards," Apryl Day said.

They called for a criminal investigation to follow the coronial investigation.

"This process has been painful, gruelling and extremely traumatic for our family and our community," Belinda Day said.

"We've heard the evidence from Victoria Police, Ambulance Victoria and V/Line. Victoria Police have repeatedly said that nothing has changed and no review has happened as a result of Mum's death.

Tanya Day's family members say their lives will never be the same. ( ABC News: Nicole Asher )

"We find this deeply offensive. Victoria Police must take responsibility for Aboriginal people dying in their custody.

"It is clear to us that the investigation into our mum's death has been flawed and inadequate. This is because police should not be investigating police.

"Our lives will never be the same. I think we've got at least a six-month wait for recommendations, and at the end of the day they are just recommendations."

Tanya Day and her daughter Belinda Day. ( Supplied )

Final submissions will be made to the coroner in November.

Ms Day's family want commitments from Victoria Police, Ambulance Victoria and V/Line to adopt any recommendations the coroner hands down.

Ms Day's death propelled the Victorian Government to scrap the offence of public drunkenness — a key recommendation of the Royal Commission into Aboriginal Deaths in Custody almost 30 years ago.