Missing 2015??

I am looking for photos of someone (a child) I spent time with in 2015. Idk why but I can find zero photos from 2015. NONE. I have every other year since prob 2009. I switched smartphones in late 2014 from blackberry to iphone. i even looked on photo ordering websites and nothing from 2015! It’s so weird!

She is no longer with us, so I was hoping to pass some photos to family....