Please help me with a homework assignment

In one of my classes this term, I need to create an idea for a mobile app or web application that will make the world a better place. It does not need to be technically or economically feasible to actually create this; the instructor is trying to get us to think big.

I've decided that I'd like to create a smartphone app relating to rape.

The features I'm considering for this include (in no particular order):
1. A way to use the phone's GPS to locate the nearest rape crisis center.
2. A checklist for someone who has just been raped, including how to preserve evidence while waiting for law enforcement.
3. A "panic button" that will send the victim's location to trusted friends and family.

Please let me know what you think about this. Can you think of more features? How can I make this as useful as possible?

Thanks in advance!