I drove the Volvo, Chrysler Pacifica, & Lexus RX back-to-back-to-back at a test drive event.
After driving I put them in this order:
Lexus
Chrysler
Volvo
Since the Lexus isn't an option for your wife, then I would go with the Pacifa. It's roomy, comfortable, and easy to drive.
Let us know what she ends up with! :)