Mandy Margaret Irene Turner, 42, had only driven about 200 metres when she crashed into the back of a car, and then into a house on Cheltenham Way, Prospect Vale, narrowly avoiding a bystander.

She was given a suspended prison sentence in the Supreme Court in Launceston on Tuesday and disqualified from driving for 18 months.

The court was told Turner had been drinking alcohol at a work Christmas function before she was driven home, but then drove a car at 6.20pm following an argument.

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Another motorist was driving south on Cheltenham Way when Turner drove out of Buckingham Place and failed to give way, causing the other driver to swerve to avoid a collision. Turner then ran into the back of the vehicle, but sped away on the wrong side of the road.

Turner lost control at the roundabout at Las Vegas Drive and crashed through a garden bed and into the front bedroom of a house. An occupant of the house was in the driveway at the time and had to step back to avoid being struck.

Another occupant of the house described an "explosion of brick dust", before noticing a car was in their bedroom.

The family knew Turner, and a witness said "It's Mandy" when she got out of the car and laid down on the front lawn with minor cuts to her hands. She had to be helped to an ambulance due to her intoxication, the court heard.

She gave a reading of .23, between four and five times the limit.

The court ordered Turner to pay compensation to RACT to cover the insurance on the house, which could be close to $60,000, but this amount is being queried.

Defence counsel Grant Tucker said Turner was "absolutely horrified" by her actions and "alcohol obviously overrode her usual defences".

Acting Justice Brian Martin said Turner's actions were "extraordinarily dangerous" and her family had suffered financial hardship as a result.

"Your conduct has caused significant hardship to you and your family," he said.

"[This] pales into insignificance in comparison to the grave risk you posed to other people in the vicinity.

"You came very close to killing or seriously injuring a number of people."

Turner was jailed for seven months, which was suspended for two years.