If you can get the coils shipped to CA then have your GF send them to you, it's perfectly legal, assuming she's 21 or older. But that's a pricey way to get your coils, since you'll have to pay signature verification shipping to CA, then shipping to NY, which if you do it the way you're supposed to, needs to be marked as vape supplies and sent signature verification, as well. Your GF can just prepay postage online and not declare it, though. You're still paying for shipping twice. You will need to buy a lot of coils at one time to make up for the added cost. It might be cheaper in the long run to just get a different tank that uses coils that you can get easier. Or better yet get an RTA and learn to build your own coils. Cotton and wire will always be available.