Thanks all for your kind replies. Here are some details:
She is currently in Estoria (Queens, NY), she does not have a car (does not need a car in NYC), she won't drive across country (time constraints, starting in late Jan in Burbank). No preference on cars, mainly driving from apartment to work, because there is no affordable apartment near work in walking distance. We are hunting for apartment as well right now. It's apprenticeship job, pay is not great. But there might be future opportunities. She currently wanted to come back to NY, but who knows.
My current thinking:
1) lease a toyota corolla, currently toyota offers $199/month for 39 months, afrer 8 months in CA, we can bring the car back to NY and continue to use, in case she comes back, otherwise, she can just keep the car whereever she goes.
2) buy a used car, 10-12K range, and sell it after 8 months, but hassle with selling a car
3) ship one of my cars to CA. But my cars are older cars, and NYS inspection sticker will expire during the 8month period, I have not figured out what to do on that yet