She is the sister of Patrick, Francis, Gerald and Derrick Mc Reary, the only daughter and the youngest child of Maureen and an unnamed father. At first, Packie tells Niko to stay away from her, but later encourages Niko to go out with Kate.She holds conservative values towards premarital sex, and according to Patrick, "she won't put out".
That characterization continued through the late-1950s and 1960s before the character became again depicted as a vicious, calculating, psychopathic killer.
If I'm going to have a past, I prefer it to be multiple choice! An argument with Germany over how many telegraph poles they owed their war debt creditors. Initially portrayed as a violent sociopath who murders people for his own amusement, the Joker later in the 1940s began to be written as a goofy trickster-thief.
She shows up as an unknown caller and cannot be called back.
However, Rockstar hasn't given any official response to it.
If the player chooses the "Deal" ending and Niko has not been dating Kate before the mission, it creates a glitch where if Niko calls her, she'll never answer and a dial tone will play when she calls and says she has heard about Roman's death and says she will be there for Niko.
If the "Revenge" ending is chosen, she may still contact the player to go on dates due to a glitch.
If "Revenge" is chosen, Kate is happy that Niko decided to kill Dimitri rather than do the deal, she attends Roman's and Mallorie's wedding with Niko, during the wedding Kate is accidentally killed by Jimmy Pegorino (who was aiming for Niko) and Niko takes revenge on Pegorino for Kate's death.
Later, after Niko has killed Pegorino, Roman says that he and Mallorie are expecting a baby and if it's a girl she will be named after Kate.
Unlike some other girlfriends, Kate does not have a special ability which can be unlocked. Kate has three kinds of outfits: In Harboring a Grudge, Waste Not Want Knots, and I Need Your Clothes, Your Boots, and Your Motorcycle, she wears a white sweater and a black shirt with denim jeans. After Niko kills Dimitri to avenge Roman, Kate calls him, telling him that she heard of his cousin's death, and will be there for him.