Gilda Dent - Batman: Arkham Knight: A Flip of a Coin

The beloved ex-wife of Harvey Dent, Gilda Dent (nee Gold) seperated from her husband after he became Two-Face. 

Nethertheless he still kept a portrait of her, hanging it up in the Hell's Gate Disposal Services along with several other items signifciant to both Dent and Two-Face.