Thank you for your feedback :)
Given the time constraints we unfortunately had a few bugs (particularly with the dialogue re-starting).
*SPOILERS FOR OTHERS READING*
The clues you collect show you memories about her life that she got to re-live through you. And, taking the photo of the ghost personifies her, transforming her from a fearful entity into a relatable human character. Reminds her who she used to be before she became a bitter ghost. I hope that this makes it a bit more clear :)