It was most likely Kimberly Halkett from Al Jazeera that called Kayleigh a lying bitch
She has a history of being a nasty cunt and calling others a bitch, when she's the biggest bitch in the room.
https://www.dailymail.co.uk/news/article-3809671/Thanks-lot-b-Moment-reporter-curses-woman-camera-presidential-debate.html