Kathleen Raines is the ex-wife of U.S. ambassador Andrew Raines and the mother of their son Tripp Raines. Her life and family were destroyed starting with when Tripp drugged and raped his classmate, Ella Mendez, at a party. Tripp was found out and openly bragged, but Andrew kept him from the police that point forward, despite Andrew and Tripp sending Ella flowers into not testifying and getting an abortion of Ella's son sired from the rape.
Tripp was later found beaten to death with a rock in Central Park. It was also revealed Andrew had an affair with the family housekeeper, Inez Rivera, and sired her son Arturo Rivera with her. Kathleen watches Arturo confess to killing Tripp, revealing Tripp set up a meeting at Central Park with Arturo and Ella, who was Arturo's secret crush, and demanded Ella take a wad of money to get an abortion. Ella refused, and Tripp slut-shamed her until she cried and shoved Arturo in the mud when he stood up for her. Knowing Tripp was his half-brother but losing respect for him on that moment, Arturo killed Tripp in a rage. While Arturo cried in Inez's arms, Kathleen stared in shock at Andrew over his actions. Kathleen likely divorced from Andrew not long after. (SVU: "Blood Brothers")