Maybe important! If Lisbeth not kept hold on to something when she was hit by the bullet she had surely fallen down by the force of the bullet, but as she pulls or keeps up Olof she stands steady.

The picture tells us that the bullet has not made a slit along Lisbeth's back, but equaled her shoulders, it means that the back has been convex (Figure 1) when the bullet hits her. That Lisbeth's back has been upright when the bullet hits her. If the bullet had hit her with a curved back (picture 2) the bullet had hit her spine.