If you really like the car you should pay what you feel is right. That said, I would ask her again if she will drop the price some more. If she says no you have lost nothing. She might just say yes!! Play the "I just can't afford what you're asking" card and see what happens.
The most important things to remember are:
1. Do you really, really want the car? If so, pay what you feel is right.
2. There are (litteraly) millions of other cars out there - If this one falls through, the right one will come along.
Roja
2003 Silver 3-Door Abarth with graphite wheels and all the toys