Sometimes they do partial scholarships for partners. (My ex's girlfriend got one to the conference they just went to.)
There are also some free conferences, though, the only one I know of is Trans-Health in Philadelphia in June. But if you're in that area, I'd definitely suggest going to it. All of the workshops are free. So... that's cool. I'm going with my ex and my sort-of-girlfriend. I'm told a lot of college-age people attend.
You could also look for a support group for yourself. I know my ex's girlfriend is a mod for one on Facebook for partners-in-progress, but I think it's just for partners of ftm folk. If you find one, though, I'm sure they would have some insight on how to help your girlfriend.