"Lily Wildor" is better known as Lilith, the Queen of the Succubi. She is one of the demons, along with the angel Inarius, who fell in love and created Sanctuary. A place separated from the High Heavens and the Burning Hells. 

Lore dump on Lilith here: https://diablo.fandom.com/wiki/Lilith

She is the recent mother of two children, Belorym (one of our party members) and Sephiran (who we will not meet during this leg of the campaign). This means that Belorym's Grandfather is the Prime Evil of Hatred Himself, Mephisto. This is unknown to Belorym, however, but after the birth of Belorym and Sephiran, the Church of Zoltun was raided by the Order of Zoltun (See Sevatar/Belorym's backstory elements) and the two children were separated. Lilith desperately wanted to find Belorym as his Demonic appearance made him her favorite, while Sephiran's human form disgusted her. It took Belorym dying for her to find him, and she regularly meddles in his affairs to try and steer him into the direction she wants. She is a master manipulator.

Voice Notes: She sound sultry, almost having a deep sensual tone (She's the queen of the succubi, everything she says has some kind of flirtatious/romantic/seductive nature to it).