Annie 1878, Maggie 1876, Mary 1882, Agnes 1884
They didn't stray far with names
Annie left her family not long after Maggie was born and moved to Canada
1914 minus 1878 = 36 Annie
1914 minus 1882 = 32 Mary
1914 minus 1884 = 30 Agnes
its just possible but as bellow

Having said that ? -
if Maggie was born 1910 she would have been only 4 in 1914 and its doubtful her mum Annie would have been working in 1914 to say to 1919/20
Though in wartime some grandparents looked after their grandkids to let the children's parents work. (Grandparents own children working)
If it is Agnes born 1896, Elizabeth 1901 and Maggie 1910 then say Maggie is 20 years old in the photo we are talking 1930 plus when the photo was taken then Anges (2) born 1896 would have been 34 years old and Elizabeth 29 years old. That 2 older sisters and
one young sister but tin the photo the older lady siter and
2 young sistersThere are 2 Agnes's 1 born 1884 and another born 1896 (12 year apart)
Are the ladies in the photo 2 sister and an auntie or some other combination