Madame Garrel

She is the mother of Toni and Serge and the wife of Milan.

History
She survived the flood that happened 35 years before the events of season one. 10 months after the flood she helped her husband organize a suicide circle. She was supposed to give sleeping pills to all the members' kids (including Toni, Serge, and baby Simon), but was unsuccessful. Police stopped her before she could.

Seven years ago she witnessed the murder of her son Serge. She died three years later and was buried next to Serge.

Season 2
In the premier episode, Serge visits his returned mother.