Lewis, now 19, then grabbed a jerry can filled with petrol, soaked his 17-year-old girlfriend and set her on fire.

The petrol fumes around her body meant Ms Finemore quickly became engulfed in flames, leaving her with severe burns to her arms, legs, torso and face.

Lewis was charged with one count of intent to cause grievous bodily harm and after a harrowing trial for Ms Finemore and her family, was found guilty.

The jury took less than two hours to reach a verdict and the crown prosecutor is asking for a minimum of 12 years.

It was on the night of May 27, 2016 that neighbours heard Ms Finemore scream out in pain, rushing to the scene and calling an ambulance.

When paramedics arrived at the Marsden house, they found a severely injured 17-year-old, rushing the teenager to Royal Brisbane Hospital where she was put in an induced coma.

After more than a day in a coma, Ms Finemore spent another month in the Brisbane hospital, dealing with surgery after surgery and partially recovering from her horrific burns.

Parts of Ms Finemore’s body are still noticeably burnt but the 19-year-old is on the road to recovery.

Speaking to 7 News after her ex-boyfriend had been found guilty of the brutal attack, Ms Finemore said she still bears mental and physical scars two years on.

“I remember being in scorching pain after the flames were put out,” she said on Thursday.

“There’s days that I walk out of my house and I have to walk straight back in because I don’t want to be stared at,” she said.

Kyesha’s mother Melissa Cooke said Lewis’ trial had been difficult for the family to go through.

“I guess it’s been really stressful, the whole court case has brought up a lot of pain and nightmares,” Ms Cooke said.

“It's a lifetime for her, it’s not just a black eye or a broken jaw.”

Two years on, Ms Finemore said she’s still in disbelief over her ex-boyfriend and former “best friend’s” crime.

“I don’t see how you could do something so horrific to someone that you love,” she said.

“If he could do it to someone that was so close to him, he could do it to anyone.”

Ms Finemore told Seven she chose to tell her domestic violence story in the hope it would encourage other women to seek help.

“You’ve just gotta remind yourself that you’re going to have bad days always but you can get through it,” she added.

Lewis’s defence claimed he thought the can of petrol was closed when he threw it towards Ms Finemore and that he didn’t realise she was surrounded by fumes.

Despite that, a jury took less than two hours to decide Lewis was guilty of the crime.

Ms Finemore is recovering, with her family by her side and regularly posts about her progress on Facebook.

In a video posted six months after she was burnt, Ms Finemore said “I’ve had way better years in my life”.

“I was just an average teenage girl … I was young and dumb and fell in love with my best friend … Best friend of five years,” she wrote.

“Until one day, something unforgettable happened … I spent 30 days in hospital knowing that there was months of treatment after I got out.

“I still am that average girl just with a few more scars … he set me free … free to live my life the way I want to live it and free to finally move on.”

Immediately after the attack, Kyesha’s sister said she “does not deserve this”.

“She is only 17 years old, she has her whole life ahead of her and she does not deserve this,” Kyesha’s sister said.

“You are such a beautiful young girl, you’re not giving up on me this easy. I know you can get through this, you’re a fighter.

“I love you heaps sis, I can’t believe this has happened.”

Lewis is expected to be sentenced Friday afternoon.

The crown prosecutor is asking the judge to sentence him to no less than 12 years in prison.