But if she disliked you from DAY 1 for NO reason, then that's unreasonable.
You're ignoring the obvious bit that many people ARE IRRATIONAL and they hold IRRATIONAL REASONS for what and whom they like, dislike, love, hate, fear, etc....
I mean that's y they're managers...bc they have power.
Most managers are human. They follow the above clause of irrationality as well. Plus they tend not to be superhuman and don't have that king like power to force people to change their social opinions regarding the liking/tolerating of others. They can place conditions on their employment where if the offending employee doesn't try and at least ACT
congenial or at least not villain like and confrontational then consequences might be shared be all parties involved.