I really enjoyed it
I don't know how she activated that lazer thing in the end, but oh well.
Thoroughly entertaining stuff!
It appears it's set to auto target, she didn't have to do anything. But it begs the question, why would the Predator fire the weapon without his mask and visual targeting knowing it could go anywhere?
As a climax scene, it really should've been scripted better. Like, having his mask knocked off by another tribe member or the dog right as he was taking the shot then having it hit him. Oh well, it's a plot hole unless someone else can explain it better.