Spend one hour teaching her to drive a stick. It just isn't that difficult (unless you live in SFO I suppose). Go to the junkyard or rockauto.com and get a sensor for the jeep that is now your airport car. Sell the pos Subaru and pay down the Mazda note. Get her to buy into a zero debt lifestyle somehow, someway. Once the debt is gone and you can swing a nicer car for her with cash the jeep can be traded for her mostly status-based car desires and you get the Mazda back.
Good luck.