Lila Rose Mary Walto fronted the ACT Magistrates Court on Wednesday when she pleaded guilty to a raft of charges, including using force to rescue a person in lawful custody, assaulting frontline community service providers, dangerous driving, stealing a car and property damage.

Walto initially faced about 20 charges and on Wednesday, the prosecution withdrew more than half of them - including harbouring an escapee.

The latest facts tendered to the court state she stole the Wrangler from a Fyshwick dealer on July 9 before the dramatic incident with Quinn, listed as her fiancé in the documents.

Walto, wearing a black face mask with a white smile on it, had told a salesman she had a loan approval of $100,000 and was looking to buy a Wrangler.

She was given permission to take the car for a test drive after giving a licence under another name.

After the first test drive, Walto told the salesman she wanted to take the car - without his presence - to show her dad, who she claimed was sick at home.

The idea was declined and after a brief argument, she took a second test drive with the salesman in the car.

She then pulled over on Majura Parkway because she said she wanted to have a smoke. While they stood on the side of the road, Walto jumped into the driver's seat and sped off towards Gungahlin, hitting a Mini Cooper.

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On that day in the morning, Quinn, who has pleaded not guilty to a charge of escaping lawful custody, told Canberra jail staff he had swallowed a battery and he did not feel well.

Staff arranged for him to be taken to the Canberra Hospital for assessment before staff became aware he was going to allegedly collect illicit drugs left for him at a Wiggles poster or picture at the hospital.

Staff had already moved Quinn, a sentenced prisoner, to the Alexander Maconochie Centre Health Ward before advising him the package had been collected.

Quinn allegedly became abusive towards staff and demanded he be taken to hospital, insisting he had swallowed a battery.

Three jail staff took Quinn in an ACT Corrective Services' Toyota Camry, which was initially hit from behind, near Red Hill.

"The boot of the vehicle was bent up when staff felt another collision from behind by the same Jeep," the document of facts states.

After being hit for the third time, the Camry was spun around "out of control onto the median strip" on Hindmarsh Drive.

Walto followed the Camry across Griffith and Kingston where she again rammed the sedan numerous times.

When the jail staff and Quinn exited the car on Oxley Street, the latter started to run away from the area, yelling "she's trying to kill me" before jumping into the Jeep.

Later that day, the Jeep was found on fire in Forrest.

The pair, both 28 at the time, were arrested at a Lyneham house within hours. Walto exited the residence after a short negotiation.

Police also heard noises in the premises' roof and heard a man saying "I am not coming out until I have smoked all my drugs".

After prolonged negotiations, Quinn, still wearing his wrist restraints from jail, exited the front door.

Police also obtained two telephone calls between Walto and Quinn recorded at the jail on the morning of the incident.

Walto told him "yeah, baby, everything is ready for me and your mum have dinner tonight".

During a police interview, she said she was planning to run away with Quinn to start a new life together.

In another recorded jail phone call between Walto and another woman after the incident, the defendant said "I don't remember much, I was really f-----g drunk".

The jail staff in the Camry sustained injuries, including bruises, a forehead abrasion, a bulging disc and a delayed concussion.

Walto was remanded in custody and is set to front the Supreme Court for a procedural hearing on May 12.

She also pleaded guilty to two other charges that will be dealt with in the Magistrates Court.

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