She tried to 'put on/up a brave face/front' [=she tried to appear brave or calm] despite the pain of the injury.
The company was slow to enter the 'brave new world' of computer technology.
I had to 'brave the elements' [=go out in bad weather] to get to work.
(..) Never. They took Miss Swann. Oh, so it is that you found a girl. I see. Well, if you're intending to brave all, hasten to her rescue, and so win fair lady's heart, you'll have to do it alone, mate. I see no profit in it for me. (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl