get up (one's) nerve (to do something)(redirected from get up her nerves)
get up (one's) nerve (to do something)
To muster or draw upon one's courage or resolve to do something. I wanted to ask Mary Sue to the prom, but I never got up the nerve. I hope Jonathan finally gets up his nerve to ask his boss for a raise.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.