The post above is a short explanation of what I truely think in general... but everything must be taken relatively.
Well It is a serious factor, but weirdly Im in the opposite situation because Im already far from my significant other.
Im in a long distance relationship (4000 miles away)...
It is hard, really hard, but we have enough trust and acceptance to make it work.
I think you are making a reasonable benchmark, because from your perspective things will be really different after living together that long if you don't see each other often- But its an expectation that works either way, (I.e Moving to unis further will only affect how much you see each other, while closer ones wont change much)
But you can always see as making this relationship work though this ('this' as in Uni no matter where yous go) as a contributing factor?
"which makes me think she doesn't value our relationship as much as I do."
- 18 months
One thing to consider, that although in a relationship its about the "Us", there is two individual people in that; with individual futures to share in unity. So I guess she wants to go to the best Uni For her future and you should think something along those lines too... Which I see where your problem is.
Is instead of seeing her a weekend or so over a time period, is seeing her for longer periods of time (like on holidays) better? Even if theres a significant gap inbetween? Then that way the money would be easyier to achieve.
"when I moved home she was the one who struggled!"
-Its not surprising, But theres always times in Long distance where one person has to remain significatly stronger (reassurance, and doing random things to show you care).
Long distance is completely posible, and this pat experience of dealing with it could add to the success.
Sorry If I went a bit from the question, and sorry if it didnt help at all but i hope you get something from this post.