Indeed it is, perhaps you could post the drawing here so we can see.
This is a fascinating image, the style of dress, the headwear and length of her dress. It looks like a set up photo, them both being dressed up, but I cannot make out the background. Looks almost like a lighthouse on the left hand side, but the strange sagging material on the right. They are almost seating quite low, not what I would expect from a studio print.
Perhaps the members here could help us strip away a few more layers of wallpaper