This.... if it has the 2.7L, I'd leave it at the roadside, because that's probably where it'll leave you. My wife's uncle had 3 Chrysler's with that engine, he had timing belt/chain failures on all of them.
The 2.7 makes good power for it's size and is smooth running, but it has oil sludging issues as well that lead to more problems and more problems then ultimate failure. If it had the 3.3L or 3.5L I'd feel better about it.
if she sells cars all the time, she must have a dealer license then? There is a limit as to how many cars you can buy and sell in a specific period of time without having one.
None of this smells right.
^^^this in bold.
Dave