Tim,
It took me ages to find that thread but I've re-read it from start to finish.
It sounds like she likes you and it also sounds like she is saying that she hasn't got time for ANY relationship, rather than simply ruling YOU out.
If she has ever been to WP, she didn't get involved with the forum, so I'd say she either doesn't come here or doesn't want to be identified - fine... we should respect that. So, why exactly does this make you feel like you have to leave WP?
You're at a crossroads Tim, where you may find that you have to give up one thing or another -
1. Give up College and go to her
2. Give up her and finish College
If it was a true Romeo & Juliet type relationship (obviously without dying at the end) or a Romantic Comedy movie, I'd say without hesitation Go for 1.
Unfortunately, she does seem rather resigned to moving on without you - ie: not even restricting her employment to ones near your location. That suggests to me that option 2 would be better.
So, assuming that you settle for option 2 - is a relationship still possible? It depends on HER plans. If she intends to date other people while you're at college, then the answer is pretty much NO.
If on the other hand she's "too busy to date anyone" then that's a very good sign. You could keep up the communication and visit regularly - be best friends, perhaps lovers (depending on how she handles your coming and going). I'm assuming this is a "south park friendly chick" - hence I'm going to use the word f.buddies.
I didn't really want to use that word but I'm trying to suggest that sex might be ok without a huge amount of commitment if it's not being sought by either person. If you could have a relationship like that for the next 2-3 years so that you could finish college, you could move it to a better stage once you leave.