She's not really much better than Sten. Only you don't get 3 of her to start with. While she's not really worse, getting only 1 copy + getting her way later than you'd find it useful work against her. Think of it as the difference between getting a slightly better car or a car that is not noticeably worse but you get free insurance with it. Both will be replaced shortly either way unless you really, REALLY, want to play 3 star frontline.