Hello!
I am kinda in the same boat now. I recently emailed the department and asked for some sort of funding. They responded well to it and said that they were working diligently to help me find some in the graduate school itself. It may also be worthwhile to email the program telling them that they are your top choice, but that you would need funding in order to attend. Depending on the school, it is also possible to find a graduate assistantship in another department by emailing those faculty.