Complex sentence: Rehan takes Zooni and arranges for a surgery that will let her see again, the operation is successful, but she later finds out that Rehan was killed in a bomb blast in the city, and is heartbroken.
Split into simpler sentences: Rehan takes Zooni and arranges for a surgery that will let her see again. The operation is successful, but she later finds out that Rehan was killed in a bomb blast in the city, and she is heartbroken.