I like her. What's wrong with a fish out of water character? It's not like she signed up to be part of the insanity. One second the woman's singing in a nightclub and next thing she knows, some stranger in a white tux has a knife/fork jabbed into her side while they fight over an ancient dead dude stuffed in a small jar (hey, maybe that's why she wasn't exactly rushing to hand Indy the antidote).
Then she is dropped out of a window, crashes down 6 stories and falls into a car being driven by a 10 year old kid while also they are also being chased and being shot at. From there, put on a plane which she subsequently has to jump out of using an inflatable boat as a parachute. I'm guessing most normal people would've whined and complained just a bit if in her shoes. Oh, did I leave out the parts where she was served monkey brains, live snakes, and spiders, then captured by Thugees, put into a cage, and dropped into a pit of lava?
However, when the chips were down, she actually comes through over and over. She got Indy the antidote, rescued Short Round and Indy from being crushed to death despite the million bugs crawling all over her, helped rescue hundreds of enslaved kids, survived the rope bridge collapse, and even doled out a little ass whooping when needed.
She's ok in my book.