Well,
You can get a killer deal on anything badged "Saturn", without doubt.
Now, this woman will presumably have a job in the not distant future, and if her current car, upon which she depends for job chasing, grocery shopping, and so on was really shot, buying a new car at a killer price may have been a perfectly rational decision.
She may have had sufficeint savings to cover the cost of the car, or she may have an employed spouse.
Anyway, don't dismiss this woman as a fool, or her decision as foolish.
In context, she may have made a very rational decision.
After all, a new Vue is not exactly a new BMW, or even a new Sky.
It is a practical, unexciting, workaday vehicle.