Not surprised that she isn't doing Work at the Grammys but I don't get why she would do KIB when it'll likely be the 2nd single. She should do LOTB instead.
She's doing both singles. Its smart for her to do Kiss It better since its likely the next Pop single she will rollout in March. Work is kinda struggling to go top 10 on Pop right now it will get there eventually but its not really a surefire #1 on that format. But Work will have a lot of staying power on Urban and Rhythmic until like April.