GOP Senate hopeful Kathleen Troia "KT" McFarland said yesterday her father threatened her with a gun "on a couple of occasions" when she was a child - and wondered whether recent revelations about her past made it impossible for her to continue to run. McFarland said that news accounts about her upbringing, and how parental abuse may have contributed to her brother's death from AIDS in 1995, was "another form of abuse" - leaving her to wonder if she should abandon her quest to unseat Sen. Hillary Rodham Clinton.