Are you looking for a long term relationship? Those are tough dude. I'd suggest just keeping her as a friend and go fishing at home
There's nothing wrong with the guy calling or emailing first. Puas like mystery say that they call a girl like an hour after getting the number simply to establish phone rapport. You can email her if you want but keep it cocky. Don't go boring afc like "hey how are you...hope you got there safe blah blah blah".
Did you have a particularly good interaction with her that you know she'll remember? Bring it up in the email. Or you can neg her with something she did that was memorable. If she fell over or walked into a wall (yes I know a girl who did that while we were walking) or whatever bring that up.
If you haven't got something like that then you gotta use your imagination and send her something like:
Awww don't cry i remember you *spell her name wrong*
and go from there. That's just off the top of my head though...make sure you put a little thought into it so you're guaranteed a response without sounding needy, your life is more fun than her's could ever be and all that. Good luck man!