Videl's Mother
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Videl's Mother (ビーデル の ママ, Biideru no Mama) is the ex-wife of Mister Satan and the mother of Son Videl.[1]
Biography
Videl's Mother was neither seen in the manga nor the anime.
Dragon Ball Z
It was hinted that Videl's Mother may have left the family when Videl stated to her father "Just because mom left, it doesn't mean you can start hanging around all these other women!!"
Data books
Videl's Mother was deceased according to the Dragon Ball: Daizenshū. Satan started hanging out with a lot of women in her absence.