Complex sentence: Regina finds Rumpelstiltskin/Mr. Gold (Robert Carlyle) while he is eating with Belle (Emilie de Ravin), and they discuss Cora; they thought her to be dead, and Regina believed she had seen her mother's body.
Split into simpler sentences: Regina finds Rumpelstiltskin/Mr. Gold (Robert Carlyle) while he is eating with Belle (Emilie de Ravin) to discuss with him about Cora. It is revealed that they thought her to be dead and Regina believed she had seen her mother's body.