This is amazing and clever and I loved every second of it! I love how this manages to combine both story and logic puzzle into one cohesive experience! I love how it seems like you don't have enough information from what's given but it's enough to figure it all out. And I love how every bit of the design and the clues themselves make the entire experience more immersive, almost like we really are seeing through Sophie's eyes as she tries to piece together her project about her family (which, just from the few bits and pieces gathered from the tape recordings, letters, and interviews, feel like real people).
Overall, this is amazing and I thank you for creating this! :D