The higher mileage cars tend to be more reliable, so you should be OK. But if that car had only 40,000 miles, like hell I'd send a kid off to college in it.
Crossfires tend to be very difficult to find service for. Just read a few threads here, you will understand. But it sounds like there is some time before she's off to school in it, so I imagine you will have a good idea bout the car by then.

Remember, you can always take the car to your local Chrysler dealer - they won't fix it, but you can take it to them - just leave a blank check when you do.