Robin, I read through your post and I understand why you don't see a solution right now.
You say you don't want the folks at your college to know you because it would make them sad if they hear that you died. That's true: you are someone of value, you're going to college, so yes, people will be sad if you decide to end your life. That's exactly a reason not to do it. Live your life, explore it and get your career going.
If I understand correctly, Laura will be attending the same college as you, in your hometown. You may bump into each other, but hey, there are loads of people there. I go to the same university as my nephew, and the only time I see him is when we text where we are. And if you see her, don't make a deal out of it. If you leave her alone I don't think she will have a problem with it. After all, there are lots more guys of your age around. Just try to ignore her, you can do that. You can direct your attention to other things, like you have done in the past year.
This will be a chance for you to make a fresh start: as you pointed out, you don't know the people at your college yet and they don't know you. Make the choice to see what life has to offer: you're only sixteen right now, you have a whole life ahead of you. If things look bad now, then that won't be forever. Things will change, but you will have to pull through. You will only know how life is for you when you live it. And that's quite a few years away from now. Don't be afraid, things will ultimately end okay for you. Believe in yourself, if you want this enough you can do it.