Thank you for all of your responses, it means a lot to have everyone giving advice.
Honestly, I'm just embarrassed of the way everything went down to even think about contacting someone within the sorority.
I did have to sign something when I dropped off my things. But right before doing so all the chapter president did was give me a disapproving look and tell me about how much paperwork she would have to do now.
I have an outstanding balance apparently, but am not listed in the member directory. I still have another year left at my university, if I'm still considered a member it would be difficult to go back to the sorority after they ostracized me.
Not sure what to do. If you say that signing something means I'm not a member anymore, I guess that's it then?