Nate’s attic is full of memories, so check out the whole area and pick up anything that has a Triangle on it to examine it closer.
At the back of the area you’ll find Nate’s gun holster with a toy gun and you can take practice shots at the round targets hanging from the ceiling. Make sure to shoot all four, including the one at the other end high above Nate’s desk.
Exit the attic and check Nate and Elena’s bedroom for a photo album of their wedding and Elena’s office for more things to examine. Head downstairs and grab a drink from the fridge - that’s not food, Drake! - and then pick up the two bowls on the opposite counter and go sit with Elena.
As Elena tells her story Nate totally fazes out, daydreaming about adventure, and you’ll get rudely awoken with a swift fork poke. The choice that follows makes no difference in the dialogue that follows, so pick whatever sounds the best.
After another short scene you’ll be faced with a moment of Naughty Dog nostalgia, playing one of the first games they ever made on the PlayStation.