In order to understand the level of culpability of the shooters, the RG reporter should have mentioned things like the distance between the shooters and the unfortunate lady and the type of rounds being fired.  High power rifle rounds can go for miles.  If the woman was hit at a distance of a mile, it is not surprising that the shooters did not hear her cries for help.  It is surprising to me that she was hit with multiple rounds since at distance that would require very high precision shooting.  If the shooting was at short range, more serious charges may have been warranted.  Whenever I target shoot, I make certain to place the target in front of a big hill and never shoot with the barrel elevated beyond the base of the hill.  A 50 foot dirt hill is very effective in bringing bullets to a complete and predictable stop.