Complex sentence: She then says to Neeraj that he deserves only death as a punishment, which he will get, but at her hands and she lets go of his hand and Aditya falls to his death.
Split into simpler sentences: She then says to Neeraj that he deserves only death as a punishment, which he will get, but only at her hands. She lets go of his hand and Aditya falls to his death.