Replying to After knocking someone out

i was on the chair and below me i see a skier and snowboarder about to collide and the guy ends up slamming his head on the ground and gets knocked out for atleast 2 minutes with a broken helmet. however, the lady that was at fault looked back, saw the dude wasn’t moving, and just went back to skiing down the hill. not sure who was really at fault here, but i know skier lady was merging onto snowboarders trail in his blind side and was fully able to see him. ski patrol was a few chairs behind me fortunately so he radioed and some ski patrol came to help the dude. in the end they ended up letting him snowboard back down the hill so i assume he was all good. but what do you do in that situation?

thanks for reading.