Hello~ I had an idea a while back but it would not let me post it in the comments, and I forgot it for a while so I am telling it to you now.
It is basically during the era of piece; Jake, (Y/N) and Kiri are visiting the labs and once scene would have (Y/N) sitting with Kiri in her lap as they watch the video logs of Grace. Kiri seeing her biological mother and getting to know her and (Y/N) seeing her dear friend/teacher/mother figure once more. Jake would be to the side and watches with a smile at his wife and daughter, he too missing Grace but knowing her memory is very much alive.
Okay, got it out there. Also, love your Avatar books.