Place it right after the betrayal reveal in your edit, then follow with the inception horn sound effect for scale, or cut straight to no god please no when the same character needs a bigger meltdown in the next beat.
About this sound
Padmé Amidala delivers the short line 'You are breaking my heart' to Anakin in a soft, broken voice that lands in just a few seconds. It feels sorrowful and theatrical, turning disappointment into clear heartbreak and betrayal. The clip comes from Star Wars: Episode III - Revenge of the Sith.