Kate does not like fast food as she will respond with negative comments such as ''Fast food? '' Kate's conversations with Niko, after getting her drunk, will eventually reveal that she knew that her father was molesting her brothers.
She doesn't explicitly state that her father was a child molester but she does cry that she knew what he was doing to her brothers.
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".
According to Patrick, Kate witnessed several bloody fights between her brothers; seeing Gerry beating Francis was a traumatic childhood experience for her (she was in therapy for quite a while).Over time she has apparently become accustomed to living close to violent crime, liking Niko despite disapproval of his dangerous lifestyle. Mc Reary had an excellent relationship with Kate and was pretty much never angry at her.She plays a pivotal role at the end of GTA IV's story.Nico can set up dates with three different women through the internet in addition to the two that he meets in the course of the storyline.Once Nico has set up the date through their is a wait period and then he will recieve an e-mail from the date.