Kate McReary is a potential love interest of Grand Theft Auto IV protagonist Niko Bellic. She is the sister of Patrick, Francis, Gerry and Derrick McReary. She's traditional, and according to Patrick "she won't put out". Despite this, you are still given the option to try and join Kate inside.
Depending on your choice of ending, Kate either lives or dies. If you chose "Deal", Kate goes on to live, whereas if you choose "Revenge", she meets her end at the hands of Jimmy Pegorino at Roman's wedding.