Well, if you'd like my opinion, here goes: if you don't want to come across as a victim, you could say that you befriended the other girls that were volunteering and that was what inspired you. Would you say this helps?
Have you decided what to do yet? I work as a project manager, at an IT firm and so I managed to put some money aside but I was already working when I decided to attend law school. I know it's hard but with a bit of luck everything might turn out OK for you.