She should just look for another job already. Staying in one company for the rest of your life is a last century idea and just a plain awful tactic today. Of course, that won't happen because the manga
needs her to have shit coworkers
Thank goodness the pandemic occurred,because it opened a lot for a lot of people,more truths,and one of them was the acceptance of being more mobile with ones' job.
If the job does not fit with you,then you need not despair,you can always find a better one,be it the same pay with better work or the same work with better pay,if not an entirely new field.
And even the Japanese are starting to learn that tradition is just peer pressure from dead people who no longer have any say.
All we need now is much,much better understanding of mental health,for a lot of the worlds' troubles can be solved once you resolve this.
For her,though,the status quo hasn't quite changed,mental health is definitely going to stick 'round,but at least she has a nice chair.