Interesting topic (half thought it was IRL
). Best I could think of:
My Inquisitor, Amitalya: Killed by my Knight (her own sister) in combat.
My Knight, Aurelia: Old age, on Alderaan.
Smuggler, Edala: Crushed to death by male strippers on Nar Shadaa... Or an engine core explosion while she's fixing it, either works.