Also i can't really make my mind up about this picture. (we don't even know if it's real)
It's the Innocent, who leads RIhanna through the rooms.
And he eventually brings her back to the starting point. It looks like through all these years following someone, she neglected her wishes, her visions, her heart. the ones she had when she was at the starting point (hence the sand...it looks abandoned). She changed a lot and the Innocent brings her back to remind her who she really is and was, which is the Key to happiness? And that she is still all that and it's time to really do her.