Unknown woman in background enhanced photo update

So here is the original photo again, with two enhancements my very talented beautiful girlfriend made for me just now

For those late to the party, my grandmother took this picture of my aunt and my cousin in 2015. Months later my uncle is looking through the pictures and asks to Gramma, "mom? Who was all here that day?" My grandmother remembered the day vividly, and there was no other people in the house at the time. The picture was taken on Whidbey island WA, which was a burial ground for local tribes for centuries before.