Malinowski died two years after Slager doused her with gasoline and lit her on fire.
A judge ruled Friday that the videotaped testimony from Judy Malinowski, 33, could be used during the trial, Fox 28 reported.
"Judy fought to share with her story", her mother, Bonnie Bowes told WCMH. "I think it's the first step toward what her legacy should and will be".
Malinowski was a mother-of-two.
"She had been delicate and also she was burnt off, however, could very definitely articulate where she turned into what took place, panic, everything that you would anticipate, & rdquo; Bowes stated".
ABC News reports Slager, Malinowski's estranged boyfriend, was sentenced to 11 years behind bars in 2016 on charges of felonious assault and aggravated arson.
Malinowski summoned the media to her hospital room before her death and mustered the strength to whisper a few damning words about her "evil" attacker.
The trial has been continued several times but because the death penalty is on the table, defense attorney Jim Archibald said there are "heightened constitutional standards".More news: China's trade surplus with United States rises
Malinowski was engulfed supporting a petrol channel a Columbus suburb, in Gahanna.
As a result of the attack she lost both of her ears and two of her fingers and was left with open wounds on her back and buttocks.
The judge allowed the testimony to play in court as Malinowski underwent extensive mental examination before she testified. He did nothing and only stood there. "Because of that, I believe the court's only option at this point is to declare a mistrial, and release the jury, should have done that last night at 10", said Payan.
After her death, OH passed Judy's Law which added six years onto the sentence of anyone convicted of an assault which permanently maimed their victim.
Her two daughters said the law helped them know their mum did not suffer in vain.
Slager's trial will begin in July.
Slager's defence attorneys argued against allowing the testimony from Malinowski saying prosecutors improperly relied on civil law rather than criminal law to obtain the recording.
The decision is possibly a first for the state and the nation, said Mark Collins, Slager's defense attorney.