Hey, fellow bone kid!
I admit that I am an old fogey who graduated from Texas State years ago, so take what I have to say with a grain of salt, because the department has grown substantially since then. There may be many more funding opportunities now, especially as the department has had an influx of research grants. I would contact your advisor, the department, and financial aid and ask, ask, ask. If you haven't already, express interest in an assistantship.
When I attended, funding was non-existent and my thesis was even self-funded. Most students in my class, I'd say, had a bill of about 30k or more by the end of the program. This can be reduced through assistantships and scholarships, although my assistantship was not great (~$500/month). Plan ahead and research extensively. Your living situation sounds great, but know that (at least for students in the far flung past) graduating without student loans was fairly slim at Texas State. I knew grad students that had 2nd or 3rd jobs outside of the program, but they did not graduate in 2 years. Also, do yourself a favor and volunteer/work your butt off in the labs (the facility, GEFARL, CAS, etc.), as much as humanly possible. I've known students that really screwed themselves, and their careers, over by snubbing lab and volunteer work. Good luck!
