Complex sentence: She learns about Ragini her brothers past and that Her choti maa, Kavya and Driver were invovled in Abhimanyu's murder but before she could tell anyone she is trapped in the passage by Ratna.
Split into simpler sentences: She learns about Ragini her brothers past and that Her choti maa, Kavya and Driver were involved in Abhimanyu's murder. But before she could tell anyone, she is trapped in the passage by Ratna.