GirlMeant2Fly seems to have thought this one out well, I've often wondered myself why such a route, other than via integrated European linked training schools (which are way overpriced) are not available.
If there are any EASA approved 'modular training schools' in California, she's onto a real winner as this route is likely to reduce her training costs for a European license by tens of thousands of euros. As for the ground school she could complete the requirements via distance learning, albeit a trip to Europe to sit the 14 exams might be necessary.
I'd be interested to hear how her idea pans out, and as far as obtaining a FAA and EASA licence is concerned, what a great idea. I for one wish her good luck with her quest!