Thanks for the reply.
I think you nailed it on the head with lack of commitment. It feels like I need to build trust that was never there to begin with, but initially I thought was. Finances are an issue, of course, but I guess more of a symptom of the problem than the cause for her.
I do realize I have some personal issue to deal with. This is the first time it has caused a problem in our relationship, however. It is tough for me--my decisions have never directly affected anybody buy myself.
Self-admittedly, I was being selfish. We have a good relationship, though, and in terms of typical relationship problems, I thought the school thing was small. I was wrong, however. This is honestly the first time I learned she didn't have control in our relationship. I really did think we were equitable in our time and effort, but apparently it was not.
As we do move into more serious things like home-ownership, I am learning much about marriage.
I am optimistic we'll do ok. I need to thank this forum, though. Just lurking has given me plenty to think about, and I can see there are plenty of wise people here

.