Conversation so far:
What films did Joan Leslie do in her later career?
Joan Leslie was in Repeat Performance, Northwest Stampede, and The Skipper Surprised His Wife during her later career.
In her later career what was Joan Leslie's age?
Who did Joan Leslie co-star with?
Joan Leslie co-starred with Jimmy Lydon in Two Thoroughbreds, as well as Ronald Reagan in This Is The Army.
Did Joan Leslie work with a certain studio or many?
Joan Leslie worked with many studios.
What is an interesting fact regarding Joan Leslie's later career?
With the help of Joan Leslie's lawyer Oscar Cummings, she took Warner Brothers to court in order to get released from her contract.

Question: Why did she want to be released from her contract?
Self-contained rewrite: Why did Joan Leslie want to be released from her contract with Warner Brothers?