You can make it happen maybe once, at a suspenseful moment. When every single scene ends with her getting extremely lucky at the most crucial moment milliseconds from death it got silly. But every other character around her get eviscerated for even making eye contact with Predator. When it comes to her suddenly he's getting punked at close range combat, is a terrible aim, forgets to put on his running shoes etc. Thicker plot armor than the titular character of a superhero flick.
Also the weird as hell scene where the movies been telling us the entire time Predator just wants to hunt deadly prey, then proceeds to walk right past her holding a shotgun to... kill the footless man crawling on the floor in agony. And gets immediately shot in the back of the head, like he didn't JUST see her as a threat the scene prior.