Estefania is Jimmy's wife and drug lord's daughter. She was married to Jimmy yet had a flame with Marco who, at the ending of Season 2, abuses her, causing her to take up residence at the Gallagher's. In season 3, things appear to be normal between Estefania and Marco, because they are seen living together, when Estefania's father comes to the States and quickly puts a bullet through Marco's head. Her father Nando is arguably one of the two main antagonist of season 3.