Ava
Mirror universe
"My sister loved you. Say her name and beg for forgiveness."
Ava was a female Terran in the mid-23rd century. She was killed during the rebellion of Lorca.
Deeming Lorca responsible for her death, her brother, Captain Maddox, sought to avenge his sibling, torturing Lorca before being killed by the rebels. (DIS: "Vaulting Ambition")
This character was only mentioned in dialogue.
StarTrek.com identified Ava – no last name is given – as a cadet aboard the ISS Buran. She was a former lover of Lorca. [1](X)