When implementing projects that affect the public, be very careful about protecting privacy. For example, the problem statement requires "photo sent back to her phone", which implies that she divulge her phone number to your project. Ick. Stalker cam. But there's another way that might help you interact with the public.
A less invasive way of providing "you are here" feedback would be to use the Pi to take a picture and upload that to a website that they can view on their phone. You can show your website right next to the camera and print the URL for all to see. This protects the privacy of their phone while engaging them to interact with your camera.