Thank for the suggestions all. I'm back in the driver seat!
I'm not sure what ultimately the problem was but apparently, as a couple people including a dealer told us, disconnecting the battery connectors for about :10 resets whatever the malfunction was. Some believe it was some sort security thing, which may have caused the vehicle to lock down, not allowing the keyless entry to work or the engine to turn over. The dealer says the manufacturer security system would still allow the vehicle to start but would cause it to stall once it was put in gear. Others think it was some sort of connection problem. I'm more inclined to agree with Big Dave as well. My hubby disconnected the connectors, sprayed some anti-corrosion stuff on the posts, reconnected, and voila, she turned right over! Thank you for the suggestion to check the negative ground cable. This seemed all too easy a fix and I'm somewhat skeptical that the problem won't reoccur. I'll check that cable just to be sure it had nothing to do with the problem this time.
Anyhow, if you have an electrical/electronic type problem, add "disconnect the battery connectors for approximately :10 then reconnect" to the list of suggestions to try!
P.S. If you're anywhere in the vicinity of Bloomfield Hills, Michigan, I would suggest you NOT call Golling Chrysler. They were of absolutely NO help, would offer no suggestions and insisted the only way they could help was if I bring it in! Hall Chrysler, in Fenton, was very helpful and was the first to suggest disconnecting the battery.