This is an interesting photo. On the back it say “Zur Errinnerung an meine Konformation Ostern 1915.”
"The blush on my conformation Easter 1915.", according to Google Translate. I do not know what is meant by The Blush.
My grandmother is in the second row from the bottom on the far right. I like the collar on the ministers robe. Anna was born in 1900 so her age was 15 at the times. Taken in Celle Germany.