Complex sentence: Her performance in the play caught the attention of Jack Warner, who signed her to a long-term contract with the Warner Bros film studio, and cast her to re-create the role in Warner Bros.' film adaptation of "Life Begins" later that year.
Split into simpler sentences: Her performance in play caught the attention of Jack Warner, who signed her to a long-term contract with the Warner Bros film studio. And cast her to re-create the role in Warner Bros.' film adaptation of "Life Begins" later that year.