[euromodder]

Do you have 25-30mph 50cc mopeds in NJ ?
Those are the least expensive motor vehicles to operate.

A V6 aerostar could cost a lot in fuel.
Hoping for 30mpg doesn't mean she's gonna get it.
The list of users with 50% over EPA isn't all that long.

At its EPA-rating, it's about 2 gallons per working day, even on that short commute.

Could you get a late 1980s, early-to-mid 90s Honda or Toyota compact for that price ?
She'd be looking at 30 - 35 mpg right away, with good hopes of doing 40 or better with some effort & practice.