blow (one's) chance(redirected from blow her chance)
blow (one's) chance
To ruin, mishandle, or fail to capitalize on an opportunity. I'm sorry, Bob, you blew your chance at a promotion when you decided to come in late to work each day this week. I blew my chances with Steve last night when I ordered the veal. How was I supposed to know he's a vegetarian?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.