A stewardess is putting her make-up on. Another stewardess says :
One thing you'll have to hand her, if they ever drag her out of a mass of wreckage, her makeup will be on straight.
How do you understand this sentence ?
It means her makeup will be fresh and well-applied. My mother used to use the variation "have her face on straight". I haven't heard it in recent years, but that could be my social circle, said NUN translator...