Elsie Wootton, with dog and decorated fir tree, at Collyweston aerodrome camp, WW1

Photo of Elsie Wootton, seated with a small dog on her lap against the wall of wooden hut on Collyweston aerodrome camp, where she worked in the canteen during WW1. At her feet a small fir tree with shoes, etc tied to it: the meaning of this is unclear.
Elsie, daughter of Henry and Eliza Wootton, also in a group photo of canteen staff from Collyweston camp during WW1 (photo item 4171).