Rob,

Despite the criteria given, I highly recommend the W210 chassis for a car like this. It's newer, safer, has GREAT AC, and is simple, easy, and cheap to maintain. Buy the absolute best example you can find and go through it as necessary with all the requisite maintenance items, such as fluids, and the daughter will be good to go in a safe ride.

The W210 is a true "gas and go" car in that it is very robust and cheap to operate. These cars routinely go 200k and more without major repairs - I encourage you to take a look in some of the online forums for the W210 chassis and you'll see what I'm talking about.

Good luck!

Dan