Firstly, you folks are funny.
I, for one, assume this particular bunyip has been killing her friends and and needs to die.
With that in mind:
She runs to her car, but the bunyip is on her. She dodges out of the way and the beast roars its anger. She rolls under the car and scrambles up on the other side. The car is locked! The bunyip gathers itself to leap over the car as she fumbles the key into the lock. She wrenches the door open as the bunyip lands. Darting inside (in the nick of time), the bunyip yanks the door off its hinges. Man, is it strong.
It reaches into the car and she almost drops the keys. But she gets it started as the bunyip tries to reach her. She guns the engine and peels out, parking lot gravel arcing behind the car. The bunyip is clinging to the car, and just as she thinks she's going to get away, it grabs the steering wheel. The car veers wildly.
Everything happens in a blur, and when she comes to the bunyip is trapped between the car and the broken ruins of a cement picnic table. The engine dies and won't turn over. The bunyip bellows in rage and pushes against the car. He might get free. She crawls out the shattered window and sees the bunyip. Every instinct screams to run, but if it gets free, she's dead. She couldn't outrun it on foot, and she's been running long enough.
She looks around. A BBQ fork stares at her from the rubbly. She grabs it and evading a swing from the bunyip, she stabs it through the eye. The beast spasms and looks almost surprised before dying.