Sentence examples for let her down from inspiring English sources

"let her down" is a correct and commonly used phrase in written English.
It means to disappoint or fail someone, to not meet their expectations or hopes. Example: I promised to take my daughter to the park on Saturday, but the heavy rain let her down and we had to stay inside all day. Another example: The team was counting on their star player to score the winning goal, but he let them down by missing the shot.