The arrow will work better on the viewer’s side of the bow. (From our viewing angle we should see the entire arrow.) A right-handed archer holds the right-handed bow correctly as shown, but the arrow will be on the OTHER side of the bow.
If she is using a left-handed bow, her pose should be reversed with her right hand in front. But she might just have a left-handed bow and be right-handed, or not really care one way or the other.
So it could be either strange or on purpose, but if you’ve shot for years (and years) it doesn’t look right and it took several minutes of wondering before realizing it.
Sorry for all this! MOST bows are right-handed and the arrow is always on the left side of the bow in that channel where it rests above the left hand. When the bowstring is released, the arrow that was barely touching in that channel is suddenly floating for a few milliseconds as it launches.