how can she not like this?

Just a thought, maybe let her pick what she wants to drive. I know my wife went from a dodge spirit to a dodge grand caravan to a hyundai Santa fe. She loved all of them and is very happy.... my life is so much better for it. Good luck.
She wants what she has now, an AWD charger

The only hang up is the fact it was originally a cop car

I tried explaining to her that it's got a cop motor, a 348 cubic inch plant, it's got cop tires, cop suspension, cop shocks...